JPH0793994B2 - Head spacing automatic control device for cuff sewing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a head gap automatic control device in a cuff sewing device, and more particularly to a head gap automatic control device in a cuff sewing device that can automatically respond to work size changes. Is.

[Conventional technology]

In sewing the cuff cloth, as shown in FIG. 5, for example, it is necessary to sew button B at one end and pierce and sew C at the other end at both ends of the cuff cloth 5, and FIG. It is a figure which shows the conventional cuff sewing device which can sew these both ends simultaneously.

In FIG. 6, D is a device table, T ₁ is a fixed table fixed to the device table D, 1 is a first sewing mechanism installed on the fixed table T ₁ , for example, a well-known buttonhole cutting mechanism. It is a hole sewing machine.

T ₂ is a moving table which can be moved in the arrow F direction by a moving means (not shown) to adjust the distance from the fixed table T _1, and 2 is a second sewing mechanism installed on this moving table T _2. , A well-known button sewing machine.

B ₃ is a button feeder, and B ₄ is a button loader for supplying the button from the button feeder B ₃ to the button sewing machine 2 via a spring chute.

CP is a control means (CP that controls each drive of the cuff stitching device).
U) control panel.

Further, H is a cuff setting mechanism, and this cuff setting mechanism H includes a magazine M, a cloth take-out mechanism 17, a guide mechanism 18,
It consists of a variable stopper 19.

The magazine M is composed of vertical walls M ₁ and M ₂ which are divided into _two , and a plurality of cuff cloths 5 are laminated on each other. A cloth take-out mechanism 17 provided below the magazine M has a friction source having a drive source (not shown). A pad or the like having a large frictional resistance provided on a ring mechanism driven by a rotating body having a large resistance or an air cylinder is used as the cuff cloth 5
Cuff cloth 5 at the lowest position in magazine M by abutting against
Can be taken out one by one from the magazine opening M ₃ .

Then, the cuff cloth 5 taken out from the magazine M is sent to the guide mechanism 18.

The guide mechanism 18 is composed of a placing plate 18b on which the cuff cloth 5 is placed, and two L-shaped guide bodies 18a composed of a vertical surface and a horizontal plane. Cylinder etc.) and can move up and down. When the cuff cloth 5 is fed, it rises until the plane of the placing plate 18b and its horizontal surface are flush with each other, and the side portion of the cuff cloth 5 and the vertical surface of the guide body 18a. The cuff cloth 5 comes in contact with the cuff cloth 5 and can serve as a feed guide.

Reference numeral 19 denotes a variable stopper, which has a rising portion that comes into contact with one end of the cuff cloth 5, and is moved in the feeding direction of the cuff cloth 5 by a predetermined dimension by a scale provided on the guide plate L and fixed. Can, cuff cloth 5
It is possible to stop the guide mechanism 18 at an appropriate positioning position. The variable stopper 19 can be moved by a motor or the like according to a command from the control means (CPU) based on predetermined data in the control panel CP.

At the position where the cuff set mechanism H is installed, the vertical wall M _{1 in} the direction opposite to the take-out direction of the magazine M is installed on the moving table T ₂ , and the other vertical wall M ₂ and the cuff cloth take-out mechanism 17, the guide The mechanism 18 and the variable stopper 19 are installed on the fixed table T ₁ .

FIG. 7 is a view for explaining the operation of the cuff set mechanism H when positioning the cuff cloth. In FIG. 7, N ₁ is the first needle drop point of the hole stitching sewing machine 1 and N ₂ is the button sewing machine. 2nd needle drop point.

NW is the distance between the needle drop points N ₁ and N ₂ , and this distance NW can be adjusted by moving the moving table T ₂ .

That is, as shown in FIGS. 8 (a) and 8 (b), the cuff cloth 5 has large and small shapes, and the button sewing position WB from each end portion of the cuff cloth and the hole and hook distance WC are also various. However, in order to adjust the position of the cuff cloth 5 in this way, the distance between the variable stopper 19 and the first needle drop point N ₁ is adjusted as WC by moving the variable stopper 19. Then, the distance NW between each needle drop is the length NW (NW = L, which is obtained by subtracting the perforation sewing distance WC and the button sewing position WB from the total length 1 of the cuff cloth.
-WC-WB) based on predetermined data in the control panel CP, and by a command from the control means (CPU), a table moving means such as a motor (not shown) moves the table T ₂
Set by moving.

In other words, the position adjustment accompanying the shape change of the cuff cloth 5 is performed only in two steps of adjusting the variable stopper 19 and moving the moving table T ₂ . Further, since the magazine M is divided into two and one vertical wall M ₁ is installed on the moving table T ₂ ,
Since moving table T by the movement of the _two longitudinal internal diameter of the magazine M cuff fabric 5 include longitudinal can be matched substantially to the length of, the proper fabric take-out is possible.

Further, the sewing two buttons B _1, B ₂ to cuff fabric 5 as shown in FIG. 8 (c) is combined first button sewing position of B ₁ as the in WB _1, Sew this on.

Then, in the subsequent second button sewing of B ₂ of performing moving difference (WB ₁ -WB ₂₎ fraction of the distance the moving table T ₂ the first button B ₁ and the second button B _2.

K is a cuff cloth moving mechanism, which allows the cuff cloth 5 set at the positioning position in the guide mechanism 18 to be set at the sewing position and the cuff cloth after sewing to be moved outside the sewing position. Has become.

The cuff cloth moving mechanism K includes a holding body 20 and a holding body driving means (a motor or an air cylinder or the like) for driving the holding body 20 between the sewing machines 1 and 2 and a stacker (not shown) and the cuff setting mechanism H. ) And.

FIG. 9 is a view showing the holding body 20, and the holding body 20 has openable and closable holding portions 21, 21 'for holding the cuff cloth 5 on both sides. The holding portion 21 holds the cuff cloth 5 positioned by the variable stopper 19, and the holding portion 21 'holds the cuff cloth 5 after sewing and discharges it to the stacker.

FIGS. 10 (a) to 10 (c) are views showing the structure and operation of the holding portions 21, 21 '.

In FIG. 10, 22 is an opening / closing plate, and two shafts are provided on the lower surface.
Has 23.

And, these two shafts 23 respectively support long plates,
One long plate is pivotally supported by the pinching body 20 by a pin 27, and the other long plate is pivotally supported by the pinning body 27 by a pin 27 'in a cam-shaped elongated hole 28, and is connected by a pin 24 to the advance / retreat part of the cylinder 25. Has been done.

Here, when the cylinder 25 is retracted from the state shown in FIG. 10 (a), each long plate rises and the opening / closing plate 22 rises from the upper surface 26 of the sandwiching body 20 to be in an open state (see FIG. 10 (b)).

Then, when the cylinder 25 further retracts (see (c) in the same figure), the long plates fall down, and the opening / closing plate 22 moves to the right side in the figure from the state shown in (a) in the figure and descends to the upper surface 26 to be in the closed state. Become.

In this way, the opening / closing plate 22 can hold the cuff cloth 5 between itself and the upper surface 26. If the cylinder 25 is advanced when releasing the cuff cloth 5, the cuff cloth 5 is released and returns to the state of FIG. 10 (a) when the state of FIG. 10 (b) is reached.

Therefore, when the cuff cloth 5 is set to the positioning position by the guide mechanism 18 described above, the holding portion 21 of the holding body 20 holds the cuff cloth 5 between the opening / closing plate 22 and the upper surface 26, and the guide body 18a moves up and down. It goes down by means. Then, the holding portion 21 moves to the right in FIG. 6 while being guided by the pair of guide plates L while holding the cuff cloth 5 between the opening / closing plate 22 and the upper surface 26, and moves the first sewing machine 1 and the second sewing machine 1 Stop at the sewing position of the sewing machine 2. Next, the holding part 21 is released, and the holding body 20 is returned to the original position by the holding body drive means through the path of the arrow R shown in FIG. On the other hand, during this period, the first sewing machine 1 and the second sewing machine 2 start sewing, and after sewing is completed, both sewing machines 1 and 2 stop.

Next, when the next cuff cloth 5 is set in the positioning position in the same manner, the one holding portion 21 of the holding body 20 holds the cuff cloth, and the other holding portion 21 'holds the cuff cloth after the sewing is completed. Hold 5

Next, similarly to the above, the holding body 20 moves to the right and the holding portion 21
Stops at the sewing positions of both sewing machines 1 and 2 to release the cuff cloth 5, and the holding portion 21 'discharges the cuff cloth 5 to the stacker.

[Problems to be Solved by the Invention]

However, all of the above operations are performed with the sewing machine stopped, and there is a drawback that the loss time is large in the case of a large variety of small lots.

The present invention eliminates the above drawbacks.

[Means for Solving the Problems]

The automatic head gap control device in the cuff stitching device of the present invention is provided with a buttonhole or sewn sewing machine and a cufflink button sewing machine side by side so that the buttonhole sewn and button sewing can be performed simultaneously on the cuff cloth. In the cuff stitch sewing device, the first and second sensors for detecting one end and the other end of the cuff cloth set on the cuff setting mechanism, respectively, and the first sensor detects one end of the cuff cloth. When the second sensor and the cuff set mechanism move relative to each other, the second sensor stops when the second sensor detects the other end of the cuff cloth. Accordingly, it is characterized by comprising means for automatically adjusting the head distance between the buttonhole sewing machine and the cuff button sewing machine.

[Action]

When the cuff cloth is supplied, the size of the head gap in the cuff sewing machine of the present invention is automatically determined, the moving table is moved according to this determination, and the head gap of both sewing machines is automatically determined. Is adjusted to.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIGS. 1 to 3, a pulse motor 40 and an idler pulley 36 having a pulley shaft 37 rotatably supported on an idler pulley bracket 38 are provided in the cuff set mechanism H. A timing belt 35 is suspended between the rotary shaft of the pulse motor 40 and the idler pulley 36, the sensor carrier 32 is connected to the timing belt 35, and the sensor carrier 32 extends in the pull-out direction of the cuff cloth 5 pulled out from the magazine M. The cuff cloth 5 is guided along the shafts 33a and 33b, and the cuff cloth 5 is pulled out from the vicinity of the end surface of the magazine M on the side of the mounting plate 18b of the cuff setting mechanism H on the guide body side.
That is, a groove or notch extending toward the variable stopper 19 side.
29 is provided, and an optical sensor 30 is provided at the tip of an L-shaped sensor bracket 31 connected to the sensor carrier 32 so as to be located above the notch 29.

Further, a work sensor 42 for detecting that a work such as the cuff cloth 5 is placed is provided on the placing plate 18b near the vertical surface of the variable stopper 19.

The head gap automatic control device in the cuff sewing device of the present invention having the above-described structure operates as follows.

By setting the cuff cloth 5 in the magazine M and turning on the power supply of the device, the pulse motor 40 is driven and the sensor 30 moves relatively to the mounting plate 18b together with the sensor carrier 32, and the mounting plate 18b is mounted. When the sensor 30 detects the plate end 18c,
The pulse motor stops. The moving table T ₂ moves to the origin by a moving mechanism (not shown). At this time, the needle position of the button sewing machine is made to coincide with the mounting plate end portion 18c in the F direction.

When the start switch is turned on, the bottom cuff cloth in the magazine M is moved to the magazine opening M ₃ by the cuff cloth removing mechanism 17.
Two sides of the cuff cloth 5 are brought into contact with the vertical surface of the guide body 18a and the vertical surface of the variable stopper 19 by being fed onto the guide mechanism 18.

When the work sensor 42 detects this state, the pulse motor 40 is driven by this detection signal, and the sensor 30 has a notch 29.
Sensor carrier 32 until the end face of the upper cuff cloth 5 is detected
Moves, and the CPU calculates the moving amount. Next, the moving amount of the button sewing machine 2 is calculated by the calculated moving amount + position WB, and the moving table T ₂ is moved by a moving mechanism (not shown) to set the head interval.

Simultaneously with or after the moving table T ₂ is moved, the holding body 20 grips the cuff cloth on the cuff setting mechanism H and the cuff cloth after sewing and sends the cuff cloth on the side of the cuff setting mechanism H to the sewing machine head.

After the holding body 20 is moved, the next cuff cloth is sent out from the magazine M, the length of the cuff cloth is measured, and when the size of the cuff cloth is changed, the head interval is reset by the CPU.

When the holding body 20 returns, the cuff cloth is grasped and the cuff cloth is fed and sewn to the sewing machine head at any time.

In the cuff sewing device shown in FIG. 1, the magazine M
Fixed table with integrated magazine M without dividing into two
Although fixed to T ₁ , it may be divided into two as in the conventional device.

Further, instead of moving the sensor 30 by the pulse motor 40, the sensor 30 may be fixed and the guide mechanism 18 may be moved.

FIG. 4 shows a flowchart of the head gap automatic control device in the cuff sewing device of the present invention.

〔The invention's effect〕

Since the head gap automatic control device in the cuff sewing device of the present invention is as described above, it has the following effects.

(1) Since the CPU controls the head gap, when the work size is changed, sewing can be continuously performed without stopping the sewing machine and making adjustments.

(2) By moving and positioning the moving table T ₂ from the automatically measured value of the work size and the already stored data, continuous sewing is possible even with different size cuff cloths.

(3) Since the cuff cloth has an automatic measuring function, the apparatus can be stopped when the cuff cloths of different sizes are stacked in the magazine and the size is changed, and the preparation for the work becomes possible.

[Brief description of drawings]

FIG. 1 is an external perspective view of a head gap automatic control device in a cuff sewing device of the present invention, FIG. 2 is a plan view of a cuff setting mechanism, FIG. 3 is a front view of the cuff setting mechanism, and FIG. FIG. 5 is a flow chart of the head gap automatic control device in the cuff sewing machine, FIG. 5 is a plan view showing the positional relationship between the cuff cloth and the sewn products at both ends thereof, and FIG. 6 is an external perspective view of the conventional cuff sewing device. The figure is a plan view showing a cuff cloth position alignment state by the cuff sewing device of FIG. 6, FIGS. 8 (a), (b), and (c) are plan views showing various cuff sewing, and FIG. A plan view showing the body, FIG. 10 (a),
11 (b) and 11 (c) are explanatory views for explaining the operation of the holding section, 11th.
The figure is a side view showing the operation of the holding body by the holding body drive means. 1 ... Hole sewing machine, 2 ... Button sewing machine,
5: Cuff cloth, 17: cloth removal mechanism, 18: guide mechanism, 18a: guide body, 18b: mounting plate, 18c: mounting plate end, 19: variable stopper, 19a. Screw body, 20 ……
Clamping body, 21, 21 '... Clamping part, 22 ... Opening / closing plate, 23 ... Shaft body, 24 ..., 25 ... Cylinder, 26 ... Top surface, 27, 27' ...
… Pin, 28 …… Oval hole, 29 …… Groove or notch, 30 …… Optical sensor, 31 …… Sensor bracket, 32 …… Sensor carrier, 33a, 33b …… Carrier shaft, 35 …… Timing belt, 36 …… Idler pulley, 37 …… Pulley shaft, 38 …… Idler pulley bracket, 40 …… Pulse motor, 42 …… Work sensor, B, B ₁ , B ₂ …… Button, B ₃ …
… Button feeder, B ₄ …… Button supply mechanism, C …… Hole and sewn, CP …… Control panel, D …… Device stand,
H ... Cuff set mechanism, K ... Cuff cloth moving mechanism, l
…… Cuff cloth length, M …… Magazine, M ₁ , M ₂ …… Vertical wall, M ₃ …… Magazine opening, N ₁ …… First needle drop point, N ₂ …
… Second needle drop point, NW …… distance between N ₁ and N ₂ , T ₁ … fixed table, T ₂ … moving table, WB… button sewing position,
WC ... Hole and sew distance.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A 1-259893 (JP, A) JP-A 57-166193 (JP, A) JP-A 63-267139 (JP, A) JP-A 50- 117564 (JP, A) JP 59-232576 (JP, A) JP 37-14679 (JP, B1) JP 56-48198 (JP, B2) JP 60-3513 (JP, B2) JP-B 63-5112 (JP, B2) JP-B 3-12906 (JP, B2) JP-B 1-25598 (JP, B2) JP-B 1-333007 (JP, Y2)

Claims (1)

[Claims] 1. A cuff stitching mechanism for a cuff stitching device in which a buttonhole button stitch sewing machine and a cufflink button stitching sewing machine are arranged side by side to simultaneously perform buttonhole button stitching and button sewing on a cuff cloth. First and second sensors for respectively detecting one end and the other end of the cuff cloth set on the above, and the first sensor is driven when the one sensor detects one end of the cuff cloth and the second sensor is Moving means for relatively moving the second sensor and the cuff setting mechanism, which stops when the other end of the cuff cloth is detected, and the buttonhole or sewn according to the moving amount of the moving means. A head gap automatic control device in a cuff sewing device, comprising means for automatically adjusting the head gap between a sewing machine and a cuff button sewing machine.