JP3377282B2 - Sewing machine with mounting member supply device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine with a mounting member supply device capable of sewing a mounting member such as an adjuster hook to a cloth-like body such as curtain cloth.

[0002]

2. Description of the Related Art Conventionally, when a curtain is made by using a sewing machine, a plastic cloth (a hook is attached to a thin plate portion) is made at an end portion of a curtain cloth formed by sewing.
The adjuster hook was sewn at predetermined intervals.

That is, when attaching the adjuster hook to the curtain cloth, a sewing machine having a mechanism for holding the adjuster hook is used. First, the thin plate portion of the adjuster hook is separated from the hook, and the thin plate portion is placed above the sewing machine bed. Insert into the mounting groove of the mounted mounting device. next,
The curtain cloth is bent to sandwich the thin plate portion, and the presser foot is lowered to fix the curtain cloth and the thin plate portion. Next, with the thin plate part sandwiched by the curtain cloth, sew the thin plate part from the top of the curtain cloth, then raise the presser foot and remove the curtain cloth together with the thin plate part from the sewing machine bed. I had a hook attached. Then, a curtain with an adjuster hook is manufactured by repeating such an operation for each individual adjuster hook.

[0004]

However, the operation of sewing the adjuster hooks to the curtain cloth is very troublesome as described above, and in order to manufacture one curtain, the adjuster hooks need to be attached to each adjuster hook. Since the same work must be repeated many times, further improvement has been desired to improve work efficiency.

The present invention has been made in order to solve the above-mentioned problems, and for example, a sewing machine with a mounting member supply device that simplifies complicated work when sewing an adjuster hook to a curtain and further improves work efficiency. The purpose is to provide.

[0006]

According to a first aspect of the present invention for attaining this object, a cloth-like body is held in a vertically stacked state on a sewing machine bed, and the upper and lower cloth-like bodies are held. In a sewing machine for sewing a mounting member arranged between them, a vertically movable lower presser which is provided above the sewing machine bed and presses the lower cloth-like body downward, and provided above the lower presser. And a vertically movable intermediate presser for detachably holding the mounting member between the lower presser and a vertically movable intermediate presser provided above the intermediate presser to press the upper cloth-like body downward. A sewing machine with a mounting member supply device, comprising: an upper presser foot; and a cloth-like body detecting means for detecting whether or not the cloth-like body is arranged at a predetermined position on the sewing machine bed. And

According to a second aspect of the present invention, when the cloth-like body detecting means determines that the cloth-like body is not arranged at a predetermined position on the sewing machine bed, the feeding device is driven. A sewing machine with a mounting member supply device according to claim 1, characterized in that supply control means for automatically supplying the mounting member is provided between the lower presser and the intermediate presser.

According to a third aspect of the present invention, when the cloth-like body detecting means determines that the cloth-like body is not arranged at a predetermined position on the sewing machine bed, the lower presser and the intermediate presser are A sewing machine with a mounting member supply device according to claim 1 or 2, wherein the sewing machine is moved toward the supply device, receives the sandwiched mounting member, and then returns to the original position.

[0009]

In the invention of claim 1, above the sewing machine bed,
The lower presser, middle presser, and upper presser are arranged so that they can move up and down in order from the bottom. The lower presser presses the lower cloth-like body downward, the intermediate presser holds the mounting member detachably from the lower presser, and the upper presser presses the upper cloth-like body downward. Further, the supply device automatically supplies the mounting member between the lower presser foot and the intermediate presser foot. Then, at the time of sewing the mounting member, the upper presser foot, the intermediate presser foot and the lower presser foot are lowered, and the lower presser foot, the mounting member and the intermediate presser are overlapped and sandwiched between the upper and lower cloth-like bodies to attach the mounting member to the cloth-like body. Sew. Particularly, in the present invention, since it is possible to detect whether or not the cloth-like body is arranged at the predetermined position on the sewing machine bed by the cloth-like body detecting means, it is possible to detect an appropriate sewing machine according to the sewing state of the cloth-like body. It becomes possible to control.

According to the second aspect of the invention, when the cloth-like body detecting means determines that the cloth-like body is not arranged at the predetermined position on the sewing machine bed, the supply control means
Since the mounting member is automatically supplied between the lower presser foot and the intermediate presser by driving the supply device, the work for supplying the mounting member after sewing can be omitted and the efficiency of the sewing work can be improved.

According to the third aspect of the present invention, when the cloth-like body detecting means determines that the cloth-like body is not arranged at the predetermined position on the sewing machine bed, the lower presser foot and the intermediate presser are directed toward the feeding device. Since it moves so as to sandwich the mounting member, and then receives the mounting member and returns to the original position, the mechanism on the side of the supply device can be simplified, and the flexibility of the mounting position of the supply device is improved.

Examples of the cloth-like body include sewn cloth (for example, curtain cloth), non-woven fabric, sheets of synthetic resin, and the like, and are not particularly limited as long as they can be sewn by a sewing machine. Further, as the attachment member, for example, a hook for attaching the curtain to the curtain rail,
In particular, an adjuster hook or the like that can adjust the position of the hook portion can be used, but the present invention is not limited to this.

As a structure for holding the mounting member, a structure in which the intermediate presser itself is biased by, for example, an air cylinder or a spring, or a structure in which the intermediate presser itself is a leaf spring can be adopted. As the cloth-like body detecting means, for example, a sensor using light can be adopted. Among them, the sensor that irradiates light and judges the presence or absence of the cloth-like body based on the reflected light has a simple structure because the sensor may be arranged only on the sewing machine arm side. The sensor that determines based on light has an advantage that the cloth-like body can be detected reliably.

As a mechanism for moving the lower presser and the intermediate presser, a mechanism for moving a base on which the lower presser and the intermediate presser are placed, for example, in the XY directions by a motor can be used.

[0015]

Preferred embodiments of the present invention will be described below in order to further clarify the structure and operation of the present invention described above. 1 is a perspective view of the sewing machine of the embodiment, FIG. 2 is a front view of a main portion thereof, and FIG. 3 is a side view of the left side thereof.

As shown in FIGS. 1 to 3, a sewing machine with a mounting member supply device (hereinafter, simply referred to as a sewing machine) 1 according to the present embodiment is suitable for use in sewing an adjuster hook 3 on a sewn curtain cloth. The sewing machine bed 5 and the sewing machine arm 7 erected on the sewing machine bed 5 are configured as follows.
A moving unit 9 disposed on the sewing machine bed 5 and capable of moving horizontally; a holding mechanism 11 provided on the moving unit 9; and a supply device 1 for supplying the adjuster hook 3 to the holding mechanism 11.
3 and 3.

The respective components will be described in detail below. At the tip of the sewing machine arm 7, an optical sensor 14 is attached to the mounting plate 1.
It is attached to the outside of the tip via 6. As shown in FIG. 3, the optical sensor 14 receives an irradiating portion 14b that irradiates the light and the irradiating light that is reflected by the (plated) surface of the moving portion 9 at the sewing position (photodiode). And a light receiving portion 14b. That is, since there is little reflected light when there is curtain cloth and there is much reflected light when there is no curtain cloth, the presence or absence of curtain cloth is determined based on the change in the amount of reflected light.

A needle 8 is attached to the lower side of the tip of the sewing machine arm 7, and the adjuster hook 3 sandwiched between curtain cloths is sewn by reciprocating the needle 8 up and down. . As shown in FIGS. 1 and 2, a plate-like cloth mounting base 15 on which the curtain cloth is mounted at the time of sewing is fixed to the front surface side of the sewing machine bed 5, and the moving section 9 is provided on the cloth mounting base 15 as shown in FIG. And (above it) move in parallel with a small gap.

The moving portion 9 is a plate-like member formed in a substantially T shape and is movable in the XY directions. This move is
The X-axis pulse motor 10a and the Y-axis pulse motor 10b (FIG. 4) driven according to the command stored in the electronic memory.
Refer)).

The presser mechanism 11 includes a lower presser 21 and an intermediate presser 23.
The upper presser 25 is a mechanism that supports the upper presser 25 and the upper presser 25 so as to be movable in the vertical direction. That is, the presser mechanism 11 is provided with the upper presser drive unit 31 for driving the upper presser 25 on one side of the support column 27 (in front of the sewing machine 1) and also on the other side of the support column 27 (rear side of the sewing machine 1). Further, a lower presser drive unit 33 that drives the lower presser 21 together with the intermediate presser 23 is provided.

The upper presser drive unit 31 has a first arm 35 pivotally supported by the support column 27, a first air cylinder 37 for driving the first arm 35, and a tip 2 of the support column 27.
7a is provided slidably up and down, and is locked to the tip of the first arm 35, and a first slide plate 39 extends downwardly in a stepwise manner from the first slide plate 39 and is pressed upward to the tip side thereof. 25
And a first connecting portion 41 to which is attached.

On the other hand, the lower presser drive section 33 has a structure similar to that of the upper presser drive section 31, and includes a second arm 51, a second air cylinder 53, a second sliding plate 55, and
It is composed of the second connecting portion 57. As shown in FIG. 2, an intermediate presser drive portion 61 is attached to the horizontal portion 57a of the second connecting portion 57, and the intermediate presser drive portion 61 is
The third air cylinder 63 moves the intermediate presser 23 in the vertical direction.

As shown in FIG. 1, the supply device 13 uses push rods 71 (see FIG. 6) for the stacked adjuster hooks 3 one by one by means of a fourth air cylinder (not shown) inside the device. It is a device that pushes out and automatically supplies to the holding mechanism 11 side.

As a mechanism for driving and controlling the sewing machine 1 described above, an electronic control unit 73 including a microcomputer is provided as shown in FIG. This electronic control unit 73 includes a well-known CPU 73a, ROM 73b, R
AM73c, input section 73d, output section 73e and bus 73
It is provided with f and the like. Of these, the input section 73d includes a first switch 75 for instructing receipt of the adjuster hook 3, a second switch 77 for instructing sewing of the adjuster hook 3, and an optical sensor 14 for detecting the presence or absence of curtain cloth. It is connected. Also, the output unit 73e
Includes an X-axis pulse motor 10a and a Y-axis pulse motor 1
0b, the first to fourth electromagnetic valves 81 to 84 that switch the flow paths of air to drive the first to fourth air cylinders 37, 53, 63, and the sewing machine motor 85 that drives the needle 8 are connected. ing.

Next, the operation of the sewing machine 1 of the present embodiment having the above-mentioned structure will be described with reference to the flowchart of FIG. 5, the above-mentioned FIG. 2 and the explanatory views of FIG. 6 to FIG. (1) When the power switch (not shown) is turned on, the sewing machine 1 is set to the initial state (step 100). That is, the first to third solenoid valves 81 to 83 are controlled to supply the air from the air compressor (not shown) to the first to third air cylinders 37, 53, 63, whereby the air shown in FIG.
As shown in, the lower presser foot 21, the intermediate presser foot 23, and the upper presser foot 25 are raised and are arranged at a position (a sewing position) at which normal sewing is started.

(2) Next, it is determined whether or not the first switch 75 has been pressed (step 105). When it is determined that the first switch 75 has been pressed, the X-axis and Y-axis for moving the moving section 9 are moved. The shaft pulse motors 10a and 10b are driven to move the pressing mechanism 11 together with the moving part 9 from the sewing position in the initial state to the supply mechanism 11 side and move to a predetermined receiving position (of the adjuster hook 3) (step 110). ).

(3) When the pressing mechanism 11 moves to the receiving position, the fourth solenoid valve 84 of the supply device 13 causes the fourth electromagnetic valve 84 to move to the fourth position.
As shown in FIG. 6, the air cylinder is driven to move the push rod 71 to the holding mechanism 11 side while holding the adjuster hook 3 at the tip of the push rod 71.
It is stopped at a predetermined delivery position (step 120).

(4) Next, in this state, as shown in FIG.
The third solenoid valve 83 is controlled to supply air to the third air cylinder 63 to move the intermediate presser 23 downward. By this, the adjuster hook 3 arranged at the delivery position is
It is clamped by the lower presser 21 and the intermediate presser 23 (step 13).
0).

(5) When the holding of the adjuster hook 3 is completed, the push rod 71 returns to the original position and the pressing mechanism 11 also returns to the normal sewing position (step 140). (6) Next, as shown in FIG. 8, the upper and lower sides of the adjuster hook 3 sandwiched between the lower presser 21 and the intermediate presser 23 are sandwiched by the curved curtain cloth K.

(7) Next, it is judged whether or not the second switch 77 has been pressed (step 145). If it is judged that the second switch 77 has been pressed, as shown in FIG. The intermediate presser foot 23 and the lower presser foot 21 are driven down by the cylinder 37, and the upper presser foot 24 is driven down by the second air cylinder 53, whereby the sewing becomes possible (step 150). The curtain cloth K is omitted in FIG.

(8) Next, the sewing machine motor 85 is driven to start the vertical movement of the needle 8, and the sewing machine 1 is reciprocated in the front-back direction while the moving portion 9 and the pressing mechanism 11 hold the curtain cloth K. The adjuster hook 3 is sewn between the curtain cloth K by moving (step 16).
0).

(9) When this sewing is completed, the first
The third air cylinders 37, 53 and 63 are driven to raise the lower presser 21, the intermediate presser 23 and the upper presser 25 to return them to the initial position (step 170). (10) Next, based on the signal from the optical sensor 14, it is determined whether or not the curtain cloth K has been removed from the sewing position (step 180), and when it is determined that the curtain cloth K has been removed, Returning to step 110, the subsequent processing (such as attaching the next adjuster hook 3) is repeated.

As described above, in the sewing machine 1 of this embodiment, the feeder hook 13 can automatically feed the adjuster hook 3 between the lower presser foot 21 and the intermediate presser foot 23, and the adjuster hook can be adjusted by the lower presser foot 21 and the intermediate presser foot 23. Since 3 can be clamped, the work of disposing the adjuster hook 3 at a predetermined sewing position is extremely easy.

Particularly in this embodiment, after the adjuster hook 3 is first sewn to the curtain cloth K, the optical sensor 1
It is determined whether or not the curtain cloth K after sewing is removed by 4, and if it is removed, the process of automatically attaching the next adjuster hook 3 is performed without any switch operation, and the next sewing is performed. Switch 7 for instructing
Since the input of 7 is awaited, the work of sewing the adjuster hook 3 on the curtain cloth K is significantly simplified. That is, since the adjuster hook 3 is automatically and sequentially attached between the lower presser foot 21 and the intermediate presser foot 23 after one sewing is completed, the operator only operates the second switch 77 for instructing the sewing. The work efficiency is greatly improved.

Further, in this embodiment, the pressing mechanism 11 can be easily moved to the desired and suitable receiving position by the moving portion 9 which is movable in the XY directions.
There is an advantage that the mounting position of No. 3 and its structure and function are not so limited. It should be noted that the present invention is not limited to the above-mentioned embodiments and can be of course implemented in various modes within the scope of the gist of the present invention.

As the optical sensor 14, for example, a transmissive optical sensor in which an irradiation section and a light receiving section are separately arranged in the sewing machine arm 7 and the sewing machine bed 5 can be used instead of the reflection type.

[0037]

As described in detail above, according to the first aspect of the present invention, since the mounting member can be automatically supplied between the lower presser foot and the intermediate presser foot, the work of disposing the mounting member at a predetermined sewing position is performed. Is extremely easy. Further, when sewing the mounting member, the upper presser foot, the intermediate presser foot and the lower presser foot are lowered, and the lower presser foot, the mounting member and the intermediate presser are overlapped and sandwiched between the upper and lower cloth-like bodies,
The attachment member can be easily and reliably sewn to the cloth-like body. Particularly, in the present invention, since it is possible to detect whether or not the cloth-like body is arranged at the predetermined position on the sewing machine bed by the cloth-like body detecting means, it is possible to detect an appropriate sewing machine according to the sewing state of the cloth-like body. The remarkable effect that control can be performed is exhibited.

In the second aspect of the present invention, when the cloth-like body detecting means determines that the cloth-like body is not arranged at the predetermined position on the sewing machine bed, the supply control means
Since the mounting member is automatically supplied between the lower presser foot and the intermediate presser by driving the supply device, the work for supplying the mounting member after sewing can be omitted, and the efficiency of the sewing work can be improved.

According to the third aspect of the present invention, when the cloth-like body detecting means determines that the cloth-like body is not arranged at the predetermined position on the sewing machine bed, the lower presser foot and the intermediate presser are directed toward the feeding device. Since it moves so as to sandwich the mounting member, and then receives the mounting member, it operates so as to return to the original position. Therefore, there is an advantage that the mechanism on the side of the supply device can be simplified and the flexibility of the mounting position of the supply device is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a sewing machine with a mounting member supply device according to an embodiment.

FIG. 2 is a front view showing an optical sensor and a pressing mechanism.

FIG. 3 is a side view showing a state of arrangement of optical sensors.

FIG. 4 is a block diagram showing an electronic control unit.

FIG. 5 is a flowchart showing processing such as sewing.

6A and 6B show a state in which an adjuster hook is passed to a holding mechanism, FIG. 6A is an explanatory view showing a side surface thereof, and FIG. 6B is an explanatory view showing a front surface thereof.

7A and 7B show a state in which an adjuster hook is passed over a holding mechanism, FIG. 7A is an explanatory view showing a side surface thereof, and FIG. 7B is an explanatory view showing a front surface thereof.

8A and 8B show a state in which a curtain cloth is arranged on a pressing mechanism, FIG. 8A is an explanatory view showing a side surface thereof, and FIG. 8B is an explanatory view showing a front surface thereof.

FIG. 9 shows a state when the adjuster hook is sewn,
(A) is explanatory drawing which shows the side surface, (b) is explanatory drawing which shows the front surface.

[Explanation of symbols]

1 ... Sewing machine with mounting member supply device (sewing machine), 3 ... Adjuster hook, 7 ... Sewing machine arm, 8
... Needle, 9 ... Moving part, 11 ... Presser mechanism, 13 ... Supply device, 14 ... Optical sensor, 21 ... Lower presser, 23 ... Middle presser, 25 ... Upper presser, 37 ... First air cylinder, 53 ... Second air Cylinder, 63
… Third air cylinder

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-7-213769 (JP, A) JP-A-52-141753 (JP, A) Actual Kai-hei 1-155980 (JP, U) JP-B-40- 2840 (JP, B1) Patent 2642855 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) D05B 1/00-97/12

Claims (3)

(57) [Claims] 1. A sewing machine for holding cloth-like bodies vertically stacked on a sewing machine bed and sewing a mounting member arranged between the upper and lower cloth-like bodies. And a vertically movable lower presser for pressing the lower cloth-like body downward, and a mounting member provided above the lower presser and detachably holding the mounting member between the lower presser and the lower presser. A vertically movable intermediate presser, an up and down movable upper presser provided above the intermediate presser to press the upper cloth-like body downward, and the cloth-like body at a predetermined position on the sewing machine bed. A sewing machine with a mounting member supply device, comprising: a cloth-like body detecting means for detecting whether or not the cloth-like body is arranged. 2. When the cloth-like body detecting means determines that the cloth-like body is not arranged at a predetermined position on the sewing machine bed, the feeding device is driven to move the lower presser and the middle presser. 2. The sewing machine with a mounting member supply device according to claim 1, further comprising a supply control means for automatically supplying the mounting member between the presser foot and the presser foot. 3. When the cloth-like body detecting means determines that the cloth-like body is not arranged at a predetermined position on the sewing machine bed, the lower presser and the intermediate presser are moved toward the supply device. Move and receive by sandwiching the mounting member,
The sewing machine with a mounting member supply device according to claim 1, wherein the sewing machine returns to the original position after that.