JPS6231107Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a fabric loading device for a sewing machine.

Conventionally, in this type of device, for example, when one end of the work cloth is sewn on a sewing machine table and then transferred to the delivery side and suspended below the side edge of the table, an air cylinder is activated. The workpiece presser lever is rotated toward the stacking table, the hanging portion is clamped between the stacking table and the workpiece presser lever, and then, when sewing is completed, the air blowing means located below the table is activated. There is a method in which air is blown onto the other end of the work cloth, the work cloth is turned over, and the work cloth is stacked on a stack table.

However, this conventional configuration requires two air drive means, that is, an air jetting means and an air cylinder, and therefore has the drawback of increasing manufacturing costs.

Also, a loading device has been proposed which is equipped with a cloth reversing lever rotated by an air cylinder in place of the air blowing means for reversing the work cloth.
This device requires two air cylinders, and the problem of rising manufacturing costs cannot be solved.

Purpose This invention was made in order to eliminate the above-mentioned defects, and its purpose is to provide a work cloth loading device for a sewing machine that has a simple structure and can be manufactured at low cost.

Example An example that embodies this idea is shown in Figure 1~
This will be explained according to FIG. A pair of legs 3 having substantially L-shaped sides are attached to the lower surface of the table plate 2 of the sewing machine table 1, and a construction plate 4 is installed between the legs 3. The leg body 3 and the construction body 4 constitute a support leg. Further, a sewing machine head 5 is disposed on the table plate 2. With the work cloth C placed on the table plate 2, a predetermined sewing operation can be performed using the sewing machine head 5. On the side of the leg 3 on the delivery side of the work cloth C, there is a plane approximately U.
A letter-shaped base 6 is disposed, and a pair of support columns 7 are erected and fixed at a predetermined interval at the base end of the base 6. A vertical wall 8 is provided between the upper parts of the pair of supports 7 so as to be located between the base 6 and the table board 2 on the cloth feeding side of the table board 2.
is fixed. Further, a trough-shaped first adjusting member 10 having a leg 9 at the lower end is slidably attached to the lower part of each support column 7, and by moving each adjusting member 10 in the vertical direction and fixing it at the moving position,
The upper surface of the vertical wall 8 and the upper surface of the table board 2 can be made to coincide with each other. The pillar 7 can be fixed to the table board 2 while the height of the pillar 7 is adjusted.

At the tip of the base 6, a first support shaft 11 serving as a transmission body is rotatably supported by a pair of bearings 12. A cloth removing lever 1 is attached to one end of this spindle 11.
3 is fixed at its base end so that it can rotate integrally with the first support shaft 11. A rod-shaped cloth removing body 14 extending substantially horizontally is attached to the upper end of the cloth removing lever 13. Furthermore, an engaging protrusion 15 is provided protruding near the tip of the cloth removing lever 13.

A second support shaft 1 extending parallel to the first support shaft 11 is located above the base 6 in the vicinity of the first support shaft 11.
6 is disposed, and a work cloth loading lever 17 is attached to the second support shaft 16 thereof. The work cloth loading lever 17 includes a pair of support rods 18a and 18b, and a connecting body 19 is formed at the middle portion of the work cloth loading lever 17, that is, at the lower end of each of the support rods 18a and 18b. Each connecting portion 19 is inserted into and fixed to the second support shaft 16 . Said first
A connecting plate 20 as a connecting body is provided at one end of the support shaft 11.
is fixed at one end, and the other end is fixed to the second support shaft 1.
6, and the second support shaft 16 is inserted into the first support shaft 1.
It is designed to be able to rotate around 1. A connecting piece 21 is protruded near the connecting portion 19 of one of the support rods 18b and extends downward in a direction diagonally intersecting the support rod 18b. An air cylinder 22 as an actuating means is rotatably mounted on the outer surface of the base 6 so as to be located between the connecting piece 21 and the base 6, and the piston rod of the air cylinder 22 is rotatably mounted on the outer surface of the base 6. 23 connects to the connecting piece 21 via the joint 24
is rotatably connected to. Each support rod 18
A substantially thorn-shaped second adjustment member 25 is attached to the upper part of each support rod 18a, 18b so as to be slidable along each support rod 18a, 18b. The provided rubber roller 26 is installed, and the rubber roller 26 can be fixed at a desired adjustment position together with each second adjustment member 25 by thumbscrews 25a.

Further, a support frame 27 is provided at the tip of each of the support rods 18a, 18b and projects rearward, and a cloth support 28 covered with sponge rubber or the like is installed between the tips of the support frame 27. . Further, the rubber roller 26 and the cloth support body 28 constitute a workpiece cloth stacking section. A cloth presser lever 29 is rotatably supported at its base end at one end of the second support shaft 16, and a cloth presser body 30 extending substantially horizontally is attached to the tip of the cloth presser lever 29. ,
An engaging portion 31 that can be engaged with the engaging protrusion 15 of the cloth removing lever 13 is provided in a protruding manner. A tension spring 32 is hung between approximately the center of the presser foot lever 29 and the lower part of one of the pillars 7, and the force of the spring causes the presser foot lever 29 to move around the second support shaft 16 as shown in FIGS. It is urged to rotate clockwise in FIG.

Further, the rotation radius of the presser foot body 30 of the presser foot lever 29 about the second support shaft 16 is
The rotation radius of the cloth support body 28 is set to be approximately the same as the rotation radius of the cloth support body 28 around 1st against 17
A rotational force F1 in the clockwise direction in FIGS. 2 to 5 about the support shaft 11 is applied. Furthermore, since the tension spring 32 is suspended between the substantially central part of the presser foot lever 29 and the lower part of one of the support columns 7, the second support shaft 16, the connecting plate 20 and the first support shaft 11
The first support shaft 11 is connected to the cloth removal lever 13 via
A clockwise rotational force F2 is applied from FIG. 2 to FIG. 5 around .

Next, the operation of the work cloth loading device configured as described above will be explained. In FIG. 2, air is supplied to the left side of the piston 33 of the air cylinder 22, and the support rods 18a and 18b of the workpiece cloth loading lever 17 are held vertically through the piston rod 23 and the joint 24. 17 is disposed at a position apart from the vertical wall 8, and the sewn work cloth C is stacked on the rubber roller 26 and the cloth support 28. In this state,
The spring force of the tension spring 32 causes the presser foot lever 29 to
The cloth presser foot 30 is pressed against the outer surface of the workpiece cloth C on the workpiece cloth loading lever 17, and the cloth wiping lever 13
The cloth removing body 14 is arranged at a position where it abuts against the vertical wall 8. On the other hand, table plate 2 of sewing machine table 1
A work cloth C being sewn is placed on the upper surface of the machine.

When the sewing machine is operated in this state, a stitch is formed on the work cloth C, and the work cloth C is transferred to the cloth delivery side, that is, to the left in FIG. Guided by vertical wall 8
hanging along. As shown in FIG. 3, after a predetermined number of stitches have been sewn and the hanging portion of the work cloth C has reached a predetermined length, the air on the left side of the piston 33 is not discharged. Air is supplied to the right side. Then, due to the difference in the cross-sectional area of the left and right sides of the piston 33, which differs by the cross-sectional area of the piston rod 23, a pressure difference occurs between the left and right sides of the piston, and the piston rod 23
It is moved to the left in the figure and kept balanced at that moving position. By this leftward movement of the piston rod 23, the work cloth loading lever is rotated clockwise through the joint 24 about the second support shaft 16 from the position shown in FIG. The work cloth C is held between the work cloth C on the cloth loading lever 17 and the vertical wall 8. At this time, with the workpiece presser foot 30 in pressure contact with the outer surface of the workpiece cloth C on the workpiece cloth loading lever 17, the workpiece presser lever 29 follows the workpiece cloth loading lever 17 due to the spring force of the tension spring 32. It is rotated clockwise in Figure 2.

Next, the air on the left side of the piston 33 shown in FIG. 3 is discharged, and when the piston rod 23 is further moved to the left in FIG. Second
A rotational force is applied in the clockwise direction in FIG. 3 about the support shaft 16, but since the rubber roller 26 is in pressure contact with the vertical wall 8 via the work cloth C, A repulsive force is generated due to the application of the rotational force. Therefore, the work cloth loading lever 17 is rotated clockwise in FIG. 3 about the rubber roller 26, and the air cylinder 22 is rotated clockwise in FIG. 3 about its shaft attachment. Ru. As the work cloth loading lever 17 rotates, the second
A relative rotational movement occurs between the support shaft 16 and the connecting plate 20, and the cloth removing lever 13 and the connecting plate 20 move around the first support shaft 11 as a rotation center against the spring force of the tension spring 32. The cloth removal lever 13 is separated from the vertical wall 8 by integrally rotating in the counterclockwise direction in the figure. Then, as shown in FIG. 4, the cloth removing lever 13
As the work cloth C rotates, the work cloth C is turned over and its end portion is held on the cloth wiper 14. Further, as the cloth wiping lever 13 rotates, the engaging protrusion 15 is engaged with the engaging portion 31 of the cloth presser lever 29, and the cloth presser lever 2
9 is rotated counterclockwise in FIG. 3, and the workpiece presser body 30 is separated from the workpiece cloth C on the workpiece cloth loading lever 17.

Subsequently, when air is supplied to the left side of the piston 33 while the air on the right side of the piston 33 shown in FIG. 4 is not discharged, the piston rod 23 moves to the right side in FIG. The work cloth loading lever 17 is rotated back counterclockwise in FIG. 4 around the rubber roller 26, and the air cylinder 22 is returned counterclockwise in FIG. 4 around its shaft attachment. Rotated. At this time, a relative rotational movement occurs again between the connecting plate 20 and the second support shaft 16, and the cloth removal lever 13 is rotated back clockwise in FIG. 4 based on the spring force of the tension spring 32. After the cloth removing body 14 is detached from the end of a piece of sewn work cloth C and the work cloth C is loaded on the work cloth loading lever 17, the cloth removing body 14 touches the vertical wall 8. come into contact with As the cloth removing lever 13 is rotated back, its engaging protrusion 1
5 disengages from the engaging portion 31 of the workpiece presser foot lever 29, the workpiece presser foot lever 29 is rotated clockwise in FIG. It comes into contact with the outer surface of the work cloth C newly loaded on top, and can prevent the work cloth C from falling off from the work cloth loading lever 17.

As the piston rod 23 moves to the right, the work cloth loading lever 17 is rotated back in the radial direction about the second support shaft 16, and as shown in FIG. The cloth C is separated from the vertical wall 8.

Next, when the air on the right side of the piston 33 shown in FIG. 5 is discharged, the pressure of the air on the left side of the piston 33 moves the piston rod 23 back to the right to the position shown in FIG. With the work cloth held between the presser foot 30 and the presser foot 30, the work cloth loading lever 17 resists the spring force of the tension spring 32.
Then, the cloth presser lever 29 is rotated back counterclockwise to the position shown in FIG. 2, and the work cloth C is held in a horizontal state.

By repeatedly controlling the operation of the air cylinder 22 as described above, a large number of work cloths C can be continuously stacked on the work cloth loading lever 17. or,
In this embodiment, each lever can be actuated by one air cylinder, so the configuration can be simplified, and there is no need to use air blowing means to reverse the sewn work cloth C. Since there is no noise, the generation of noise can be prevented.

Note that this invention is not limited to the above-mentioned embodiments; for example, an actuating means for rotating the workpiece cloth loading lever may be provided between the lower end of the workpiece cloth loading lever and the support leg. It is also possible to arbitrarily change the configuration of each part without departing from the spirit of the invention.

Effects As detailed above, this invention has excellent effects in that it is possible to load a large amount of processed cloth, and also to simplify the structure and manufacture it at low cost.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a workpiece cloth loading device that embodies this invention, and FIGS. 2 to 5 are illustrations of the same operation. Sewing machine table...1, table plate...2, legs...3, construction plate...4 (support legs are formed by the above 3 and 4), base...6, vertical wall...
8. First support shaft as a transmission body...11, Cloth removal lever...13, Cloth removal body...14, Work cloth loading lever...17, Connecting portion as an intermediate part...19,
Connecting plate...20, Connecting piece...21, Air cylinder as operating means...22, Rubber roller...2
6. Fabric support body...28 (the above-mentioned 26 and 28 constitute a processed fabric loading section), Tension spring...3
2. Processed cloth...C.

Claims (1)

[Claims for Utility Model Registration] A sewing machine table 1 consisting of a table plate 2 and support legs 3 and 4, a vertical wall 8 disposed on the fabric feeding side of the sewing machine table 1, and a fabric extending further from the vertical wall 8. a base 6 disposed on the feeding side; a lower end is rotatably supported on the base 6; a cloth wiper 14 is attached to the upper end; the cloth wiper 14 is spaced apart from the vertical wall 8; A cloth wiping lever 13 is rotated between a position and a position where it contacts the vertical wall 8, and the cloth wiping body 14 acts on the cloth wiping lever 13 so that the cloth wiping body 14 comes into contact with the vertical wall 8. a spring 32 for applying rotational force in the direction; The work cloth loading sections 26 and 2 are movably supported, and have work cloth loading sections 26 and 28 provided at their upper ends, and have a connecting section 21 extending from the middle section 19 thereof.
a work cloth loading lever 17 that is rotated between a position where the work cloth C is separated from the vertical wall 8 and a position where the work cloth C is held in cooperation with the vertical wall 8; and rotation of the work cloth loading lever 17. In order to move the axis closer to and away from the vertical wall 8, a connecting body 20 is connected to the intermediate portion 19 of the work cloth loading lever 17, and a connecting body 20 is provided between the connecting body 20 and the cloth wiping lever 13. As the rotation axis of the work cloth loading lever 17 approaches the vertical wall 8, the cloth removing body 14 of the cloth removing lever 13 is brought into contact with the vertical wall 8, and the work cloth loading lever 17 is rotated. a transmitting body 11 that separates the cloth removing body 14 of the cloth removing lever 13 from the vertical wall 8 as the axis moves away from the vertical wall 8; a connecting portion 21 of the work cloth loading lever 17 and the base 6; Or provided between the support legs 3 and 4,
A work cloth loading device for a sewing machine, characterized in that an actuating means 22 is provided for applying rotational force to the work cloth loading lever 17 via the connecting portion 21.