JPH0323172Y2 - - Google Patents

Description

[Detailed explanation of the invention] Purpose of the invention (industrial application field) This invention relates to sewing machines, and more specifically, a sewing piece presser for holding sewing pieces such as watz pens and labels on processed fabric during sewing. It is related to the device.

(Prior Art) Conventionally, as this type of device, for example, as shown in FIG. 5, a wafer pen or a label etc. is sewn onto the work cloth C by a cloth presser member 42 that presses the work cloth C against the bed surface 41. An opening 43 is formed for accommodating the sewing piece W, and the sewing piece W is placed in the opening 43.
One in which an intermediate presser member 44 is provided to press the workpiece cloth C against the workpiece cloth C is known. The intermediate presser member 44 is operatively connected to an elevating body 45 equipped with a reversing mechanism via a crank arm 46, so that the needle can perform circular stitches along the peripheral edge of the sewing piece W starting from the sewing start point A. When the end portion B of eye formation is reached, the reversing mechanism is activated and the crank arm 4
6 is reversed to the chain line position, thereby closing the annular stitch, and at the end of one sewing operation, the elevating body 45 is raised and the intermediate presser member 44
The presser foot is now released.

(Problems to be Solved by the Invention) However, in this conventional sewing single presser, not only is the configuration of the reversing mechanism complicated, but also the intermediate presser member 44 is closed at the end of one sewing operation.
is simply moved to a position above the opening 43, so when setting the next sewing piece W onto the workpiece cloth C, the intermediate presser member 44 becomes an obstacle, making the work very troublesome. It was hot.

Structure of the invention (means for solving the problem) This invention was made by paying attention to the above-mentioned problem, and the means for solving the problem includes an opening 7 in which the sewing piece W is accommodated, and a work cloth. A presser foot member 5 that presses C against the bed surface 6 and moves it relative to the vertical movement path of the needle 3; and a support member that is movable integrally with the cloth presser member 5 relative to the vertical movement path of the needle 3. 12, an intermediate press member 18 which has a presser part 20 and a support part 17 and is attached to the support member 17 so as to be movable relative to the support member 12; and a horizontal biasing force is applied to the intermediate press member 18. the first presser foot 20 to position the presser foot 20 at the pressing position at the beginning of sewing;
positioning means 37, 39 including spring means 39 of
a second spring means 19 that applies a downward biasing force to the intermediate presser member 18 so that the presser member 20 presses the sewing piece W; An engaging member 33 engages with the support portion 17 and moves the intermediate presser member 18 to the sewing end position immediately before the end of forming an annular seam, and the intermediate presser member 18 has an engaging member 33 whose presser portion 20 moves the intermediate presser member 18 to the sewing end position. It is configured such that it can be moved to an open position beyond the limit.

(Function) When the intermediate presser member 18 is moved to the open position, the annular seam formed at the peripheral edge of the sewing piece W is closed, and the presser member 20 is closed.
is detached from above and to the side of the upper surface of the sewing piece W housed in the opening 7, thereby opening the upper surface of the opening 7.

(Example) Hereinafter, an example in which this invention is embodied in a cycle sewing machine will be described based on the drawings.

As shown in FIG. 1, a feed table 2 is disposed below the arm portion 1 of the cycle sewing machine, and a feed plate 10 is disposed on the bed surface 6. The needle 3 is integrally moved back and forth and left and right with respect to the vertical movement path of the needle 3 in accordance with cloth feed data stored in a storage means provided in a control device of the cycle sewing machine.

At the lower end of the mounting piece 4, which is supported on the front surface of one side of the feed table 2 so as to be movable up and down, there is a work holding member 5 in the form of a square plate.
is attached parallel to the bed surface 6, and the cloth presser member 5 is formed with an opening 7 in which a sewing piece W such as a wafer pen or a label to be sewn onto the work cloth C is accommodated. Further, as shown in FIGS. 3 and 4, a positioning member 8 formed in a rectangular ring shape is fixed to the lower surface of the presser member 5 using a flexible and elastic plate material such as rubber or urethane. The peripheral edge protrudes into the opening 7. The protruding edge of this positioning member 8 is formed to extend to closely surround the periphery of the sewing piece W, and the protruding edge is usually provided with a large number of notches 9 at equal intervals smaller than the seam pitch. It is being When sewing the sewing piece W, the workpiece presser member 5 is lowered together with the attachment piece 4 onto the workpiece cloth C placed on the bed surface 6, and the workpiece cloth C is fed by the lower surface of the positioning member 8. While being pressed against the plate 10, the sewing piece W placed on the work cloth C is positioned by the inner peripheral surface of the positioning member 8.

A support member 12 having a substantially U-shape in plan is attached to the lower end of the attachment piece 11 which is supported on the other front surface of the feed table 2 so as to be movable up and down. A connecting shaft 1 perpendicular to the bed surface 6 is provided on the top surface of the front end portion of the front extending portion 13 of the support member 12.
4, a support base 15 is rotatably mounted. A rotating plate 17 serving as a supporting portion extending in the front-rear direction is rotatably connected to a supporting shaft 16 provided on the supporting base 15 in parallel to the bed surface 6 at its front end.
Attached to the rear end is a pressing plate 20, which has a similar shape to the sewing piece W and is smaller than the sewing piece W by at least the seam allowance. The rotating plate 17 and the pressing plate 20 constitute an intermediate pressing member 18 in this embodiment.

A retaining plate 3 is provided on the upper surface of the approximately intermediate portion of the rotary plate 17.
8 is attached so that its position can be adjusted left and right. or,
The support member 1 is
A positioning protrusion 37 is erected and fixed on the left side edge of 2, and between the positioning protrusion 37 and the locking plate 38, a biasing force is applied to the intermediate presser member 18 in the horizontal direction (counterclockwise direction in FIG. 1). A coil spring 39 serving as a first spring means is tensioned. This coil spring 39 and the positioning protrusion 37
This constitutes the positioning means in this embodiment, and the urging force of the coil spring 39 moves the rotating plate 17.
When the left side edge of the pressing plate 20 is in contact with the positioning protrusion 37, the pressing plate 20 is placed in the opening 7 of the presser foot member 5 at a pressing position at the beginning of sewing, contacting the sewing piece W from above.

A coil spring 19 is attached to the support shaft 16 as a second spring means for urging the rotating plate 17 to rotate downward. By the action of the coiled spring 19, the pressing plate 20 presses the sewing piece W onto the work cloth C at the pressing position. As shown in FIG. 2, an engagement bolt 22 is screwed into a screw hole 21 formed in the middle of the rotating plate 17, and the rotating operation of the engaging bolt 22 causes the rotating plate 17 to move relative to the support member 12. The vertical position is changed, and the pressing force by the pressing plate 20 is adjusted as appropriate.

A guide stand 25 is fixed to the upper surface of the support member 12 at a position adjacent to the right side of the tip of the rotary plate 17 so as to extend from side to side, and an inclined surface 26 is provided on the end surface on the side of the rotary plate 17. is provided, and the opposite end surface serves as a locking surface 27. When the intermediate pressing member 18 with the pressing plate 20 placed in the pressing position is rotated clockwise in FIG. 1 about the connecting shaft 14, first, the rotating plate 17
is rotated upward by the action of the inclined surface 26, and the pressing plate 20 is moved to a position above the sewing piece W in the opening 7, and then, as the rotating plate 17 slides on the upper surface of the guide table 25, the intermediate presser After the member 18 leaves the above-mentioned upper position to the right side and passes through point A in the figure, it is placed in an open position where the upper surface of the opening 7 is opened, and in the open position, it is pressed as shown by the chain line in the figure. The plate 20 is rotated downward by the action of the coiled spring 19 and is held in place by the locking surface 27 of the guide stand 25.

On the other hand, a support rod 29 is supported on the lower surface of the distal end of the arm portion 1 so as to be movable up and down, and a needle 3 is attached to the lower end of the support rod 29.
A presser foot 3 equipped with a passage hole 30 for passing through the presser foot 3
1 is attached, and when the support rod 29 is lowered, the presser foot 31 comes to press the peripheral edge of the sewing piece W between the positioning member 8 of the presser member 5 and the pressing plate 20. ing. An engaging member 33 is attached to the lower end of the support rod 29 via a screw 32 so that its position can be adjusted vertically through a long hole 34 at its upper end. It is impossible to move relative to the passage. Then, the sewing start position near the right side of the rotating plate 17 (first
Immediately before the end of forming an annular seam along the periphery of the pressing plate 20 starting from point A in the figure (point B in FIG. 1), the engaging member 33 is positioned at the tip of the rotating plate 17. The coil spring 3 is inserted between the intermediate presser member 18 and the support member 12 by engaging with the engagement plate 35 provided so that the coil spring 3
9, the press plate 20 is moved to the sewing end position near the sewing start position, the vertical movement of the needle 3 is stopped at the same position, and in this state, the intermediate presser The member 18 is moved beyond its sewing end position to the open position.

Next, the operation of the sewing piece presser device configured as described above will be explained.

Now, at the start of sewing, the workpiece cloth C is placed on the feed plate 10.
After the presser member 5 and the support member 12 holding the intermediate presser member 18 in the open position are lowered, the sewing piece W is positioned along the positioning member 8. After that, the operator presses the intermediate presser member 1.
8 is lifted, the intermediate press member 18 is returned from the open position to the press position by the action of the coiled spring 19 and the coil spring 39, and the sewing piece W is pressed onto the work cloth C.

Further, at the start of sewing, the needle 3 is placed relative to the sewing start position shown by A in FIG. 1, and when the sewing machine is operated in this state, the needle 3 is moved up and down, and Based on the feed data, the feed table 2 is moved together with the presser foot member 5, the support member 12, and the intermediate presser member 18 back and forth and left and right with respect to the vertical movement path of the needle 3, so that the needle 3 moves from the sewing start position A to the press plate 20. It is relatively moved in the direction of arrow Q along the outer periphery, and as it moves, the peripheral edge of the sewing piece W has a portion near the outside of the periphery and an inside portion of the sewing piece W, as shown in FIG. A seam is formed across.

By the way, when forming this seam, as shown in FIG. 3, the positioning member 8 of the presser foot member 5 is formed so that its protruding edge closely surrounds the periphery of the sewing piece W and extends in an annular shape. Therefore, the positioning member 8 can reliably position the sewing piece W around the entire circumference, and there is no problem that the sewing piece W is misaligned with respect to the workpiece cloth C due to the feeding operation. Moreover, since a large number of notches 9 are formed on the protruding edge of the positioning member 8, even if the needle 3 falls onto the positioning member 8 due to a programming error or the like, as shown by the chain line in FIG. There is no risk that the needle 3 will be guided into each notch 9 and sewn into the positioning member 8, and breakage of the needle 3 due to contact with the positioning member 8 can be prevented.

In this way, when the needle 3 is relatively moved to the sewing point B shown in FIG. The pressing plate 20 is rotated together with the rotating plate 17 toward the open position while resisting the action of the coil spring 39. At this time, due to the action of the inclined surface 26, the intermediate presser member 18 immediately releases the coiled spring 1 at the beginning of its rotation.
Although the sewing piece W is moved upwardly from the pressing position to the upper position against the urging force of the pressing plate 9, since most of the sewing piece W has already been sewn, the sewing piece W is moved upwardly as the pressing plate 20 rotates. does not shift on the work cloth C.
Also, while the intermediate presser member 18 is moving to the open position, the needle 3 is relatively moved from point B to the sewing end position of point A shown in FIG. After the annular seam was closed,
A predetermined tacking stitch is applied to this seam-binding portion. After the end of the tacking stitch, thread trimming is performed, and the vertical movement of the needle 3 is stopped. In this state, the engaging member 33 is further moved relatively, and the intermediate presser member 18 disposed at the open position is moved to the above-mentioned engaging surface. 27, and the entire upper surface of the opening 7 is opened.

In this way, when the sewing work is completed, the presser foot 31 is raised together with the engaging member 33, and then the feed base 2 is moved until the needle 3 is located relative to the sewing start position A. At this time, the engagement member 33 separates from the engagement plate 35 by rising, but the intermediate presser member 1
8 is locked to the locking surface 27 of the guide stand 25, so the opening 7 of the intermediate presser member 5 is open. Thereafter, the presser member 5 and the support member 12 are raised, and the work cloth C is replaced. Then, by depressing the pedal, the presser member 5 and the support member 12 are lowered onto the work cloth C, and then the next sewing piece W is placed on the work cloth C. In this case, since the intermediate presser member 18 is arranged and held in the open position, the work of setting the sewing piece W into the positioning member 8 can be performed extremely easily without being hindered by the pressing plate 20. Thereafter, when the intermediate press member 18 is lifted slightly to release the engagement between the intermediate press member 18 and the locking surface 27, the intermediate press member 18 is moved from the open position by the action of the coil spring 39 and the coil spring 19. Placed back into position. Then, the presser foot 31 is lowered to the peripheral edge of the sewing piece W at the sewing start point A, and the next circular stitch is formed in the same order as described above.

Here, in this embodiment, the intermediate presser member 18
is moved to the open position by the movement of the feed base 2 after it has engaged with the engagement member 33, but the present invention is not limited to this, and the operator may manually hold the intermediate presser member 18 as necessary. It is also possible to move it against the springs 19,39.

Note that this invention is not limited to the configuration of the above-mentioned embodiment. For example, in FIG. The coiled spring 19 and the coiled spring 3 may be configured to slide toward each other, or a spring that acts diagonally downward to the left is attached to the intermediate presser member 18, and one of the springs is used to move the coiled spring 19 and the coiled spring 3.
It is also possible to modify the shapes and configurations of each part arbitrarily without departing from the spirit of the invention, such as by adding the effect of No. 9.

Effects of the invention As detailed above, according to this invention, after the annular seam has been formed on the peripheral edge of the sewing piece, the intermediate presser member is placed in the open position and the opening of the presser member is opened. This provides an excellent effect in that the setting work of the sewing piece to the work cloth can be performed extremely easily.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a sewing piece presser device showing an embodiment of this invention, and Fig. 2 is an X--
3 is an enlarged plan view of the main part, FIG. 4 is a sectional view taken along the line Y--Y of FIG. 3, and FIG. 5 is a plan view of the main part of the conventional device. In the figure, 2 is a feed base, 3 is a needle, 5 is a presser member, 6 is a bed surface, 7 is an opening, 8 is a positioning member, 9 is a notch, 12 is a support member, 17 is a rotating plate as a support part, 18 is an intermediate presser member, 19 is a first
20 is a pressing plate as a holding part, 25 is a guide stand, 26 is an inclined surface, 27
33 is a locking surface, 33 is an engaging member, 39 is a coil spring as a second spring means, C is a processed cloth, and W is a sewing piece.

Claims (1)

[Claims for Utility Model Registration] (1) An opening 7 is provided in which a sewing piece W such as a wafer pen or a label is sewn onto the work cloth C, and the work cloth C is pressed against the bed surface 6. a cloth presser member 5 that moves the work cloth C relative to the vertical movement path of the needle 3; and a support member 12 that is movable integrally with the cloth presser member 5 relative to the vertical movement path of the needle 3. , a presser foot 20 that has a similar shape to the sewing piece W and is formed to be smaller than the sewing piece W by at least the seam allowance, and that can press the sewing piece W; an intermediate press member 18, which is provided between the support member 12 and the intermediate press member 18, and is attached to the support member 17 so as to be movable relative to the support member 12; A first member applies a horizontal biasing force to the intermediate presser member 18 so that the presser member 20 of the member 18 is positioned at the pressing position at the beginning of sewing.
positioning means 37, 39 including spring means 39 of
The intermediate presser member 1 is provided between the support member 12 and the intermediate presser member 18 so that the presser portion 20 of the intermediate presser member 18 presses the sewing piece W.
a second spring means 19 that applies a downward biasing force to
and the presser foot 2 is provided immovably relative to the vertical movement path of the needle 3 and starts from a sewing start position near one side of the support portion 17 of the intermediate presser member 18.
Immediately before the completion of forming an annular stitch along the circumferential edge of 0, the intermediate presser member 18 is engaged with the support portion 17 and moved relative to the support member 12, and the sewing is completed near the sewing start position. and an engaging member 33 for moving the intermediate presser member 18 to the sewing end position, and the intermediate presser member 18 has the first spring means 3
The presser foot 20 is movable beyond the sewing end position against the biasing force 9, and is moved to an open position where the sewing piece W accommodated in the opening 7 is separated from above and laterally from the upper surface of the sewing piece W. A sewing piece presser device for a sewing machine, characterized in that it is configured as follows. (2) Claims for registration of a utility model characterized in that the intermediate presser member 18 is rotatably attached to the support member 12 at its support portion 17 around an axis perpendicular to the bed surface 6. 1st
A sewing piece presser device for the sewing machine described in Section 1.