JPH0368146B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an embroidery sewing machine for sewing embroidery materials such as cords, strings, tapes, etc. onto base fabric in a pattern. It is an object of the present invention to provide an embroidery sewing machine which can control speed and speed up sewing operations.

Next, a first embodiment of the present invention will be explained with reference to FIGS. 1 to 3. In the figures, 1 is suspended from a frame F of a sewing machine head so as to be movable up and down, and a sewing needle 2 is attached to the lower end. The needle bar 3 is attached to the needle bar 1, and the nipple 3 is rotatably suspended from the lower end F1 of the frame F so as to be concentric with the sewing needle ₂ , and the needle 4 is attached near the upper end of the nipple 3. On the other hand, it is a transmission gear fitted externally so that it can rotate together, and is linked to a drive system (not shown) that is driven based on a signal transmitted prior to the sewing operation of the sewing needle 2, such as a drive system incorporating a pulse motor. The embroidery machine is then rotated forward and backward by a predetermined angle in accordance with the embroidery pattern.

Reference numeral 5 denotes a substantially cylindrical movable member that can rotate together with the nipple 3 below the transmission gear 4 and is fitted externally to allow the nipple 3 to move up and down. A bobbin holder 7, which is protruded from the side to rotatably support a bobbin 6 on which an embroidery material S such as tape is wound, is attached so as to be rotatable with the bobbin 6, and its rotation is controlled together with the bobbin 6 by the rotation of the transmission gear 4. .

8 is a bobbin holder 7 with respect to the peripheral surface of the rotatable member 5.
The guide lever is swingably supported via a pin 9 on the opposite side of the lever, and is always biased clockwise by a spring 10 wound around the pin 9, and is moved along the circumferential surface of the rotatable member 5. A hemispherical protrusion 11 is formed at the tip of the upper piece 8a, whose side surface is bent into an approximately L-shape, while a hemispherical protrusion 11 is formed at the lower end of the lower piece 8b, whose side surface is bent into an almost square shape along the nipple 3. A guide hole 12 is provided near the lower end of the nipple 3 in order to insert the embroidery material S pulled out from the bobbin 6 and define the position at which the embroidery material S is supplied to the embroidery fabric. When the needle 8 swings back and forth, the guide hole 12 moves in an arc in the lateral direction slightly above the embroidery material K and is displaced to both sides near the needle base.

Reference numeral 13 denotes a rotary solenoid attached to one side of the frame 1, which is almost periodically excited or demagnetized by a signal transmitted every time the transmission gear 4 rotates, and is fitted onto the rotation shaft 13a. swing lever 14
is swung downward or upward.

Reference numeral 15 denotes a lifting shaft that passes through a bearing 16 attached to the side surface of the frame 1 below the solenoid 13 so as to be able to slide up and down, and its upper end engages with a recess 14a at the tip of the swing lever 14. An engaging pin 17 is fixedly attached thereto, and a regulating pin 15 is fitted near the center of the engagement pin 17 to regulate the rotation of the lifting shaft 15 by being engaged with a vertical groove 16a formed in the upper part of the bearing 16.
A is provided in a protruding manner and is moved up and down via the swing lever 14 and the engagement pin 17 when the solenoid 13 is energized and demagnetized.

Reference numeral 18 denotes an interlocking member attached to the lower end of the elevating shaft 15 to control the swinging position of the guide lever 8, and it slides into contact with the protrusion 11 of the guide lever 8 at each rotational position of the movable member 5 to push the guide lever 8. It is formed in a substantially ring shape surrounding the rotatable member 5 for movement and release, and excites the solenoid 13 to move the lifting shaft 15.
When the solenoid 13 is demagnetized and the elevating shaft 15 moves upward, the guide lever 8 is released and the spring 10 is activated. It is swung clockwise by force, and each time the solenoid 13 is energized and demagnetized, the guide hole 12 is horizontally displaced alternately to both sides in the direction of stitch movement, so that the supply position of the embroidery material S can be moved from side to side.

In the above embodiment, the bobbin holder 7 may be fixed to the frame and the bobbin 6 may be rotatably supported at a fixed position.

Next, the operation and effects of the first embodiment having the above-described configuration will be explained.

In this example, a rotatable member 5 is rotatably connected to a nipple 3 whose rotation is controlled according to the embroidery pattern.
The embroidery agent S is sewn onto the embroidery fabric K.
A guide lever 8 having a guide hole 12 through which the
The guide hole 12 is swingably mounted so as to move in an arc in the lateral direction slightly above the embroidery fabric K, and the guide lever 8 is driven every time each stitch is formed to move the guide hole 12 alternately to both sides near the needle base. A solenoid 13 and an interlocking member 18 for displacement are provided.

For this reason, the supply position of the embroidery material S to the embroidery material K is controlled to move accurately to both sides of the seam line every time each seam is formed, and the embroidery material S is moved without passing the sewing thread N through the embroidery material S. By sewing zigzag patterns onto the embroidery fabric K with sewing thread N, embroidery fabrics having various embroidery patterns can be formed.

Furthermore, since the embroidery material S can be fixed to the embroidery fabric K with the sewing thread N at each bent part of its zigzag sewing pattern, the zigzag sewing pattern of the embroidery material S can be stably maintained. can.

Next, a second embodiment of _the present invention will be explained with reference to _FIGS . A pair of front and rear guide levers 8A, 8B are each swingably attached to the rotatable member 5, and both guide levers 8A, 8B are attached to a spring 10A.
is biased in opposite directions, and when the interlocking member 18A moves up and down, both guide levers 8A and 8B swing in opposite directions, and both guide holes 12A and 12B are alternately displaced to symmetrical positions. It has been done. However, both guide holes 12A and 12B are arranged with a slight offset in the front-back direction and the up-down direction, respectively.

Therefore _, when the device _of this example is used, for example, as shown in FIG. Can be sewn.

Note that the other functions and effects of the second embodiment are substantially the same as those of the first embodiment, so their explanation will be omitted.

Since the present invention is configured as described above, the supply position of the embroidery material to the embroidery fabric is controlled to move accurately to both sides of the seam line every time each seam is formed, and the sewing thread is not pierced through the embroidery material. By sewing the embroidery material onto the embroidery fabric in a zigzag pattern using sewing thread, it is possible to form embroidered fabrics with various embroidery patterns. Further, since the embroidery material can be fixed to the embroidery fabric with sewing thread at each bent portion of its zigzag sewing pattern, the zigzag sewing pattern of the embroidery material can be stably maintained.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a side view, and FIG. 3 is a sectional view taken along the line X--X of FIG. 4 is a schematic plan view showing an example of an embroidered cloth, FIG. 5 is a front view showing a second embodiment of the present invention, FIG. 6 is a side view, and FIG.
The figure is a schematic plan view showing an example of embroidered cloth. 3,3A...Nipple, 5,5A...Rotable member, 8,8A,8B...Guide lever, 12,12
A, 12B...Guiding hole, S, _S1 , _S2 ...Embroidery material.

Claims (1)

[Claims] 1. A rotatable member rotatably connected to the nipple whose rotation is controlled according to the embroidery pattern has a guide lever having a guide hole through which the embroidery material to be sewn onto the embroidery fabric is inserted. A drive means is provided so as to be swingable so as to move in an arc in the lateral direction slightly upward, and to drive the guide lever each time each seam is formed to alternately displace the guide hole to both sides near the base of the nail. An embroidery sewing machine featuring