JPH0314143Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a presetting machine for an automatic sewing machine in which cloth is transferred between a presetting section for preliminarily setting cloth and a conveyance section for actually sewing the cloth. Regarding equipment.

PRIOR ART As a conventional preset device of this type, a device in which a cloth presser device and a cloth positioning device are separate mechanisms is known. In FIG. 6, the preset portion is provided with a slide plate 3 that slides up and down on side plates 2 provided on both sides of the board 1, and between the pin 2a of each side plate 2 and the pin 3a of the slide plate 3. A spring 4 is hung on the slide plate 3, and a cylinder 5 is provided at the bottom of each slide plate 3. Further, the ends of a shaft 6 are fixed to the arms 3b of the slide plates 3 on both sides, and the upper portions of a plurality of support portions 7 are fixed to the shaft 6, and the support portions 7 are provided at an angle. A presser plate 8 made of an elastic material is attached to the lower part of this support part 7.
One end 8a of the holding plate 8 is fixed by a fixing plate 9, and the tip 8b of the holding plate 8 is configured to face and be parallel to a receiving plate 10 connected to the substrate 1 and arranged in two stages. A plurality of positioning plates 11 have one end 11a perpendicular to the upper end of the receiving plate 10, and the other end 11b is fixed to a support member 12, and the one end 11a is connected to the tip 8b of the holding plate 8, respectively.
is located opposite. The support member 12 is supported by a support body 13, and each support body 13 is configured to be able to move up and down by cylinders 14.

In the conventional preset device configured as described above, when the slide plate 3 is raised by first operating the cylinder 5 of the preset section, the presser plate 8 is raised.
is raised, so the tip 8b of this presser plate 8 and the receiving plate 1
Insert cloth 15 between 0 and 0. At this time, the operating shaft of the cylinder 14 of the positioning section is lowered, so
One end 11a of the positioning plate 11 is in contact with the upper end of the receiving plate 10. Therefore, when the cloth 15 is inserted, the lateral end of the cloth is aligned with one end 11a of the positioning plate 11.
The position will be set automatically. Thereafter, the support body 13 is raised by operating the cylinder 14, and the positioning plate 11 is raised by raising the support member 12, and the substrate 1 is moved to send the cloth 15 to the sewing mechanism.

However, since this presetting device is separated into a presetting section and a positioning section,
5 in the preset section to set the cylinder 5.
The cylinder 14 of the positioning section and the cylinder 14 of the positioning section must be operated separately, which poses a problem that the operation becomes complicated and the structure becomes complicated.

In order to overcome this drawback, the applicant proposed a presetting device shown in FIG. In FIG. 7, the substrate 16 is fixed to a support plate 17, and the substrate 16 is
A side plate 18 is fixed to the support plate 17 on both sides of the support plate 6 . Further, a slide plate 19 is attached to the upper part of the side plate 18 through a pin member 20 and a long hole 21 so as to be able to slide thereon, and also by a spring 22 hung on a pin fixed to each of the slide plate 19 and the side plate 18. The slide plate 19 is always pulled downward. Further, a cylinder 23 is attached to the support plate 17 at the bottom of both slide plates 19, and both slide plates 19
The ends of the shaft 24 are fixed to the shafts 24, and the blocks 2 are fixed to the shafts 24 at approximately equal intervals.
5 is fixed by a screw 26. Each of these blocks 25 has a doglegged board 27.
The upper end is fixed, and an L-shaped positioning plate 28 and one end 2 of the holding plate 29 are attached near the bent part of the plate 27.
8a and 29a are fixed. The other end 29b of the holding plate 29 has a surface parallel to the receiving plate 30 fixed to the board 16, and the other end 28b of the L-shaped positioning plate 28
is arranged substantially perpendicular to the receiving plate 30. Bearings 31 are attached to both ends of the support plate 17, and shafts 32 are passed through each of these bearings 31.
Both ends of these shafts 32 are fixed to support parts 33, respectively. Also, each bearing 3
1 is fixed to a part of the belt 34. These belts 34 are hung around pulleys 35 and 36, respectively, and the operating shaft of the cylinder 23 is fixed to the lower part of one of the belts 34. By operating the cylinder 37, the belt 34 is moved and the bearing 31 is moved. , the support plate 17 can be moved. Note that a camshaft 38 is provided at the set position, and a camshaft 38 is provided at the set position,
6 is in the set position, a roller 39 provided at the top of the slide plate 19 comes into contact with the camshaft 38 and is configured to restrict the slide plate 19 from rising.

On the other hand, the conveyance section is provided with a conveyance plate 42 that slides on the side of a sewing machine table 41 on which a sewing machine 40 is attached.
A support body 43 having levers 43a is provided on both sides of the conveyance plate 42 so as to be rotatable about a shaft 44. A reinforcing sheet metal 45 is attached to the upper part of this support body 43.
A presser plate 46 is supported by the reinforcing plate 45 at approximately equal intervals, and a cylinder 48 is fixed to the conveying support plate 47, and the operating shaft of the cylinder 48 presses the lever 43a of the support 43 downward. It is set up like this.

In this preset device, when the preset device is in the set position as shown in FIG. 8, when the cylinder 23 of the preset device is actuated to raise the operating shaft, the roller 39 of the slide plate 19 hits the camshaft 38, and the slide plate 19 rises to an intermediate position. Therefore,
The other end 28b of the L-shaped positioning plate 28 is in contact with the receiving plate 30, but the other end 29b of the holding plate 29 is separated from the receiving plate 30. In this state, if the cloth 15 is inserted along the board 16, the cloth 15 can be easily inserted, and the other end 28b of the L-shaped positioning plate 28
The lateral ends of the cloth 15 can be positioned by.

Further, when the cylinder 23 is lowered as shown in FIG. 9, the slide plate 19 is lowered by its own weight and the acting force of the spring 22, so that
can press the cloth 15.

Next, when the cylinder 37 is actuated to drive the belt 34 while holding down the cloth 15, the bearing 31 moves along the shaft 32, and as shown in FIG. is inserted between the presser plate metal plates 46 of the conveying section. At this time, the tip of the presser plate metal 46 has risen, so the cloth 15
is easily fed into the conveying section.

When the cylinder 48 of the conveying section is lowered at this position, the cloth presser plate 46 holds the cloth 15 as shown in FIG. At that time, if you operate the cylinder 23 of the preset section and raise the slide plate 19,
Since there is nothing to hold down the roller 39, the slide plate 19 rises to the top and the L-shaped positioning plate 28
And the presser plate 29 is separated from the cloth 15. Thereafter, the cylinder 37 is actuated to drive the belt 34, and the substrate 16 and receiving plate 30 are moved and returned to the original set position.

Note that if the belt 34 and the pulleys 35 and 36 slip and become misaligned, the belt 3
What is necessary is to provide a protrusion on the inside of the pulley 4, and provide grooves around the pulleys 35 and 36 to match the protrusion.

In this presetting device, the two-stage operation of the cylinder can be operated in three stages, so the fabric can always be clamped and sent from the presetting section to the conveying section, and the fabric can be transferred from the presetting section to the conveying section. There are advantages in that misalignment can be eliminated, thick cloths can be easily set and delivered, and the mechanism can be simplified.

Problems to be Solved by the Invention However, in this presetting device, when the L-shaped positioning plate 28 returns to the home position, the roller 39 of the slide plate 19 comes into contact with the camshaft 38 and gradually descends. The L-shaped positioning plate 28 also gradually descends, and when it returns to the home position, the tip 28b of the L-shaped positioning plate 28 completely contacts the receiving plate 30, but at that time,
When the rear end of the cloth 15 is on the receiving plate 30 as shown in FIG. 12, the L-shaped positioning plate 28 presses down on the cloth 15, causing the problem that the next preset cannot be performed.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a method of moving a conveyor section provided with a plurality of presser plate metal plates along the side of the sewing machine so as to set the presser foot on the conveyor section. In an automatic sewing machine configured to sew cloth that has been applied, the L-shaped positioning plate and presser plate are inserted between the plurality of cloth presser plate metals and whose ends are integrally connected, and the L-type positioning plate and presser plate are A support member that supports the support member, a slide member that slides the support member up and down by a cylinder, a cam that is attached to the slide member so as to return after a certain rotation, and the slide member and the cylinder are integrated. a moving means for moving back and forth, and when the cam and the camshaft come into contact with each other when the moving means is retracting, lowering and raising the cylinder;
By bringing the cam into contact with the camshaft,
The present invention is characterized in that means for providing a gap between the L-shaped positioning plate and the substrate is provided.

Effect According to the present invention, when the preset device returns to the home position, the cam comes into contact with the side surface of the camshaft, but the rotation of the cam allows the preset device to return thereafter, and the L-shaped positioning plate Since the fabric is maintained elevated above the fabric for a certain period of time, the rear end of the fabric fed into the conveying section can be easily removed from the presetting device during that time. In addition, when the L-shaped positioning plate is lowered once from this state via the cylinder and then raised again, the cam comes into contact with the lower surface of the camshaft, and as a result, the L-shaped positioning plate comes into contact with the receiving plate, and the presser plate Since it is maintained at an intermediate position raised from the receiving plate, the next cloth can be set.

Embodiment FIG. 1a is a perspective view of essential parts of a preset device according to an embodiment of the present invention, in which 17 is a support plate, 18 is a side plate,
19 is a slide plate, 20 is a pin member, 21 is a long hole, 22 is a spring, 23 is a cylinder, 24 is a shaft, 31 is a bearing, 32 is a shaft, and 38 is a camshaft. Since this is the same as a part of the configuration of the proposed preset device, the explanation will be omitted, but in this embodiment, the cam 49 is rotatably supported on the slide plate 19 by a shaft 52, and is always rotated clockwise by a spring 50. At the same time, a stopper 51 provided on the slide plate 19 restricts the rotation position in the clockwise direction. The upper end of the camshaft 38 is provided horizontally, and a cutout 38 is provided at the bottom of the tip.
A is provided.

FIG. 2 is a block diagram of a device that operates the preset device of this embodiment shown in FIG.
A ROM 53 and a RAM 54 are connected, and a start switch 55, a preset forward position detection switch 56, a preset backward position detection switch 57, and a timer 58 are connected to the input side, and a first
Cylinder 23 and cylinder 3 shown in the figure and FIG.
7 and cylinder 48 are connected.

Next, the operation of this embodiment will be explained with reference to the flowchart in FIG. 3 and the operation diagrams in FIGS. 1b, 4, and 5a and 5b. First, when the preset device is started and the start switch 54 is turned on, the first
As shown in Figure 1, the cylinder 23 is turned on and the cylinder shaft is lowered to lower the slide plate 19, thereby lowering the L-shaped positioning plate 28 as shown in Figure 1B, and setting the cloth 15. do. Next, when the cylinder 37 is turned on, the preset device moves forward, and when the preset forward position detection switch 55 is turned on at the feed section of the sewing machine, the seventh
The cylinder 48 of the conveyance section of the sewing machine shown in the figure is turned on, and the cloth presser plate 46 of the conveyance section is lowered to press down the cloth 15, as shown in FIG. And the 11th
As shown in the figure, the cylinder 23 is turned off, the L-shaped positioning plate 28 and the holding plate 29 are raised, and the cylinder 37 is turned off to return the preset device to its home position. At this time, the cam 49 comes into contact with the side surface of the camshaft 38, but as shown in FIG.
Since the preset device rotates against the
8 and the presser plate 29 are in the raised position. At this time, when the backward position detection switch 57 is turned on and it is confirmed that the preset device has returned to the home position, the timer 58 is activated and the presser plate 29 is maintained in the raised position for the set time. Meanwhile, cloth 1
5 is discharged from the preset device. Further, when the cylinder 23 is turned on and the slide plate 19 is lowered as shown in FIG. Rotation returns with the acting force of. Therefore, when the cylinder 23 is then turned off and the slide plate 19 is raised, the cam 49 comes into contact with the lower surface 38a of the camshaft 38, as shown in FIG.
The slide plate 19 is arranged between the raised position and the cylinder 23 when the preset device returns to the home position.
It is held at a position midway between the lowered position when is turned on. In this state, the tip 28a of the L-shaped positioning plate 28 is in contact with the receiving plate 30, and the holding plate 29 is in contact with the receiving plate 30.
Since the tip 29b of the cloth 15 is raised from the receiving plate 30, the end of the cloth 15 is held on the holding plate 29 as shown in FIG. 1b.
The cloth 15 can be set by entering under the cylinder 23 and turning off the cylinder 23.

Effects of the Invention As is clear from the above explanation, the present invention maintains the slide member in the raised position by engaging the cam with the end face of the stopper and rotating it while the preset device returns to the home position. Therefore, the cam is allowed to return to the home position without pinching the rear end of the cloth that was previously fed into the conveying section, and the cam is then stopped by lowering the slide member via the cylinder and then raising it again. It engages with the lower surface and maintains the slide member in the middle of the raised/lowered positions to enable setting of the next cloth, so it is possible to remove the rear end of the pinched cloth and prevent mistakes in setting the cloth. This has the advantage of improving work efficiency.

[Brief explanation of the drawing]

Fig. 1a is a perspective view of a main part of a presetting device according to an embodiment of the present invention, Fig. 1b is a side view of another main part of the presetting device showing a state in which cloth is set, and Fig. 2 is a perspective view of a main part of a presetting device according to an embodiment of the present invention. Figure 3 is a block diagram of the control circuit that operates the device, Figure 3 is a block diagram of the circuit that operates the preset device of the present invention, and Figure 4 shows the rotation of the cam when the preset device of Figure 1 returns to its home position. Figure 5a shows the state in which the slide plate is raised when the preset device in Figure 1 returns to the home position, Figure 5b
is a diagram showing the state of the L-shaped positioning plate when it returns to the home position, Figure 6 is a side sectional view of the preset device of a conventional automatic sewing machine, and Figure 7 is a diagram of the automatic sewing machine proposed by the present invention. Overall configuration diagram, Figure 8~
FIG. 11 is a diagram for explaining the operation of the automatic sewing machine of FIG. 1, and FIG. 12 is a diagram for explaining the drawbacks of the preset device of the automatic sewing machine of FIG. 7. 16... Board, 17... Support plate, 18... Side plate, 19... Slide plate, 20... Pin member, 2
1...Long hole, 22...Spring, 23...Cylinder, 2
4...Shaft, 25...Block, 26...Screw, 27...Plate, 28...L-shaped positioning plate, 2
9... Holding plate, 30... Backing plate, 31... Bearing, 3
2... Shaft, 33... Support part, 34... Belt, 35, 36... Pulley, 37... Cylinder, 38... Camshaft, 39... Roller.

Claims (1)

[Scope of utility model registration request] The conveyor section is equipped with multiple comb-shaped presser plates.
In an automatic sewing machine that moves along the side of the sewing machine to sew the cloth set on the conveying section, one end has a comb-like shape that can move back and forth between the plurality of presser plates, and the base end L with parts connected together
A mold positioning sheet metal and a presser plate, a slide member that supports the L-shaped positioning sheet metal and the presser plate and is slidable up and down relative to the substrate, and a slide member for moving the L-type positioning sheet metal and the presser plate back and forth between the presser plate plates. a moving means for moving the board back and forth, a cylinder for normally holding the slide member in the raised position and once lowering the slide member after the board has returned to its original position, and then pressing it upward again; A cam is installed so that it can swing angularly and always receives elastic force in one direction, and a stopper is fixedly arranged opposite to the cam.The cam engages with the end face of the stopper during the return of the board and rotates. By doing so, the board is allowed to return to its original position while the slide member is maintained in the raised position, and the cam is then released from engagement with the stopper end face by lowering the slide member by the cylinder and positioned below the stopper member. and then when the slide member is raised via the cylinder, the cam engages with the lower surface of the stopper to maintain the slide member at an intermediate position between the raised and lowered positions. Preset device.