JP4719514B2 - Embroidery sewing machine - Google Patents

Description

  The present invention relates to an embroidery sewing machine.

An embroidery sewing machine is a machine that attaches a cloth to an embroidery frame and moves the embroidery frame in the XY directions to perform embroidery. There are various mechanisms for moving the embroidery frame in the XY directions. One of them is an external embroidery sewing machine in which the XY moving mechanism is an attachment separate from the sewing machine main body, and the attachment is attached at the time of embroidery to perform embroidery. The other one is a built-in type in which all the XY moving mechanisms are housed inside the sewing machine main body.
In addition, a configuration has been proposed in which the XY moving mechanism is not fixed and the Y-direction moving mechanism is turned to be foldable so that it can be stored compactly (Patent Documents 1 and 2).

JP 2002-237478 A US Patent Publication US2002 / 0083872A1

When the Y-direction moving mechanism is configured to be rotatable, it is very dangerous to drive a motor or the like when the Y-direction moving mechanism is not in the stowed position or the stop position where the embroidery is completely executed. There are problems such as causing damage and malfunctions.
In particular, it is difficult to determine whether or not the Y-direction moving mechanism is at the embroidery execution stop position, and there is a problem that accidents such as starting the sewing machine without being in the stop position are likely to occur. In addition, the Y-direction moving mechanism may move from the embroidery execution stop position during the sewing machine operation. In this case as well, there is a problem that causes damage or failure.

To achieve the above object, an embroidery sewing machine according to the present invention embroiders an embroidery by moving a holding device for holding an embroidery object in the X direction along the width direction of the sewing machine body and the Y direction along the depth direction of the sewing machine body. In an embroidery sewing machine that executes sewing, an X-direction moving mechanism for moving the holding device in the X direction, and an X-direction moving mechanism connected to the X-direction moving mechanism are movable in the X direction, and the holding device is connected, A Y-direction moving mechanism capable of moving the holding device in the Y direction, and the Y-direction moving mechanism is housed along a stop position that protrudes in the Y direction to execute embroidery and along the X direction. A locking device for locking the rotation of the Y-direction moving mechanism when the Y-direction moving mechanism is at least at the stopping position for executing the embroidery, Release to unlock the locking device And a sensor for detecting the fact and outputting a locking signal when the Y-direction moving mechanism is at a stop position for executing embroidery and is locked by the locking device. It is characterized by that.
The locking device is provided on the Y-direction moving mechanism and on the X-direction moving mechanism, and engages the protrusion when the Y-direction moving mechanism is at a stop position for executing embroidery. And a proximity means for applying a force in a direction in which the protrusion and the groove are brought close to each other, and the release device fits the protrusion and the groove apart from each other against the force of the proximity means It is desirable to include a sensor that outputs a lock release signal by detecting the fact when the protrusion and the groove are separated from each other. According to this configuration, since the unlocking can be detected by separating the protrusion and the groove, the Y-direction moving mechanism is not at the stop position for executing the embroidery and the rotation is not locked by the locking device. It can be detected reliably.

  According to the above configuration of the present invention, since it is possible to detect that the Y-direction moving mechanism is at the stop position where embroidery is performed and the rotation is locked by the locking device, a reliable operation is possible, It is possible to prevent danger and damage or breakdown of equipment.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of an embroidery sewing machine according to the present invention as seen from the front side (operator side), and shows the bed front surface 92 side. A bed 90 is provided on the base B, and an arm rising portion 96 rises from the bed 90 and continues to the arm 95. The arm 95 is provided with a display section 98, and a sewing needle section N is installed to execute sewing and embroidery sewing.
The bed 90 is divided into a free arm 94, an external part 97, and a fixed part 99, and the upper surfaces thereof are kept at the same level to form a bed upper surface 91 as a whole. This bed upper surface 91 becomes a work surface at the time of sewing.
The free arm 94 is configured to function as a free arm by removing the external portion 97.
As shown in the drawing, the width direction of the sewing machine body is the X direction, and the depth direction of the sewing machine body is the Y direction.

  As shown in FIG. 2, the Y-direction moving arm 1 is mounted on the bed back surface 93 side. The Y-direction moving arm 1 is adapted to be accommodated in a notch 3 formed in the bed 90, and is normally integrated with the sewing machine main body. The arm upper surface 10 is also at the same level as the bed upper surface 91, and forms a plane that is continuous with the bed upper surface 91.

The Y-direction moving arm 1 is rotatable and protrudes in the depth direction (Y direction) on the bed back surface 93 side as shown in FIG. The Y-direction moving arm 1 is in an operating state at this position, and is configured to attach the embroidery frame to an embroidery frame mounting piece 19 provided on the Y-direction moving arm 1.
As will be described later, the Y-direction moving arm 1 is connected to an X-direction moving device 4 housed in the sewing machine body, and is moved in the width direction (X direction) of the sewing machine body by the X-direction moving device 4. The attachment piece 19 is moved in the Y direction, and the embroidery frame attached here is moved in the Y direction. By this operation, the embroidery frame is moved in the XY directions to perform embroidery.

The notch 3 is a notch having a shape that follows the outer shape of the Y-direction moving arm 1, and when the Y-direction moving arm 1 is rotated and stored, the upper surface of the Y-direction moving arm 1 is substantially the same as the bed upper surface 91. It comes to become a level surface.
The Y-direction moving arm 1 is connected to the X-direction moving device 4 at the notch 3 and moves in the X direction.
The notch 3 is covered with the cover 30 leaving a gap 36, and the cover upper surfaces 35, 35 are also at the same level as the arm upper surface 10. Also, the embroidery frame mounting piece 19 has the same level as these.
The gap 36 is provided to secure a gap between the free arm 94 and the free arm function is secured by the gap 36. It is also possible to provide an adapter or the like for making the gap 36 flush with the bed upper surface 91.

As shown in FIG. 3, the cover 30 is formed with a storage portion 31 having substantially the same shape as the outer shape of the Y-direction moving arm 1 and a recess 32 having substantially the same shape as the outer shape of the embroidery frame mounting piece 19. Is integrated with the sewing machine body.
The cover 30 moves in the X direction together with the Y-direction moving arm 1.

  The Y-direction moving arm 1 has the arm upright 96 side as a base 12, the base 12 side is connected to the X-direction moving device 4, rotates around the base 12 side as an axis, and the tip 11 side opens and protrudes in the Y direction Is configured to do. This is because by positioning the Y-direction moving arm 1 on the arm upright portion 96 side, interference between the arm upright portion 96 and the embroidery frame can be prevented, and the embroidery frame can be enlarged.

The configuration of the Y-direction moving arm 1 will be described in more detail with reference to FIG. FIG. 4 shows a state where the cover ring of the Y-direction moving arm 1 is removed.
The Y-direction moving arm 1 has a Y guard rail 13, and a Y carriage 14 moves on the Y guard rail 13. The embroidery frame mounting piece 19 is mounted on the Y carriage 14, and the embroidery frame is mounted via the embroidery frame mounting piece 19.
The Y carriage 14 is fixed to a Y drive belt 18 provided on the lower side of the Y guard rail 13 and is moved by driving the Y drive belt 18.
The Y drive belt 18 is hung between the Y drive gear 16 and the Y pulley 17, and is configured to rotate by the operation of the Y motor 15.

The base portion 12 of the Y-direction moving arm 1, that is, the base portion 12 of the Y guard rail 13, is coupled to the connecting portion 2 as shown in FIG. 5, and rotates about 90 degrees around the base portion 12 side. The connecting portion 2 includes a rotating substrate 20, and the Y-direction moving arm 1 is rotated by the rotation of the rotating substrate 20.
In FIG. 5, the Y-direction moving arm 1 is at a position protruding in the direction of approximately 90 degrees from the bed back surface 93, and this position is a position where embroidery is performed. When embroidery is not performed, the Y-direction moving arm 1 is rotated about 90 degrees and is placed in the notch 3. This state is shown in FIG.

On the other hand, the X carriage 40 of the X-direction moving device 4 is configured to move on two X guide shafts 41 and 41 as shown in FIG. The drive belt 45 is driven by an X motor 46, whereby the X carriage 40 moves in the X direction.
The base B is provided with the mechanism of the X-direction moving device 4 described above.

The connecting portion 2 is mounted on the X carriage 40.
As shown in FIGS. 8 and 9, the connecting portion 2 includes a rotating substrate 20 and a rotating shaft 21. The rotating shaft 21 is inserted into a rotating hole 42 provided in the X carriage 40 and rotates. It is configured as follows.
A square-shaped protrusion base 26 is provided on the lower side of the rotating substrate 20, and a pair of fixing protrusions 22, 22 are formed on one end side and the other end side of the lower end thereof.
The rotating shaft 21 is normally pushed downward by a spring 23 which is a proximity means, and the pair of fixing protrusions 22 and 22 are inserted into the protruding fixing groove 43 or the storing fixing groove 44, In addition, a force is applied in a direction approaching by a pressing force of the spring 23 and is fixed on the X carriage 40. In this state, the Y-direction moving arm 1 is not rotated.

As shown in FIG. 10, the X carriage 40 is provided with an overhanging fixing groove 43 or a receiving fixing groove 44 having an angle of 90 degrees, and a pair provided to face the rotating substrate 20 180 degrees. The fixing protrusions 22 and 22 are inserted and inserted.
When the Y guard rail 13 protrudes in the Y direction and comes to the stop position where embroidery is performed, the fixing protrusions 22 and 22 are inserted into the fixing groove 43 when extended, and the Y guard rail 13 is at the stop position where it is housed in the notch 3. When coming, the fixing protrusions 22 and 22 are configured to be inserted into the fixing groove 44 when stored.

When the push-up lever 24 is pushed down, the rotary shaft 21 is lifted up against the push-down force of the spring 23 by the push-up link 25. The engagement of the fixing protrusions 22 and 22 with the overhanging fixing groove 43 or the storing fixing groove 44 is released, and the Y-direction moving arm 1 can rotate. The push-up lever 24 and the push-up link 25 form an unlocking device.
As shown in FIG. 2, the push-up lever 24 has its tip exposed from the side surface of the sewing machine body.

  On the X carriage 40, rotating springs 5 and 5 are provided. The rotation spring 5 presses the side wall of the protrusion base 26 to release the rotation substrate 20 when the fixing protrusions 22, 22 and the fixed groove 43 when extended or the fixed groove 44 when retracted are released. This is for rotating a predetermined amount.

As shown in FIG. 10, the rotating spring 5 is disposed at a position where the rotating spring 5 abuts against and protrudes from the protrusion base 26 when the Y-direction moving arm 1 is in the stop position. This pressing direction is a direction in which the Y-direction moving arm 1 is protruded toward the bed rear surface 93 side, that is, a direction in which the Y-direction moving arm 1 is rotated in the stop position direction for executing embroidery.
The other rotating spring 5 'comes into contact with the projection base 26 when the Y-direction moving arm 1 is at the embroidery stop position, and presses the Y-direction moving arm 1 in the direction to rotate toward the storage stop position. Yes.

As shown in FIG. 2, it is assumed that the Y-direction moving arm 1 is at the storage stop position described above. At this time, as shown in FIG. 11A, the fixing projection 22 is in a state of being fitted into the fixing groove 44 when stored. When the rotary shaft 21 is pushed up by the push-up lever 24 from this state, the engagement between the fixing projection 22 and the groove 44 is released, and at the same time, the projection base 26 is pushed by the rotary spring 5 to rotate. The moving substrate 2 rotates by a predetermined amount.
This state is shown in FIG. At this time, as shown in FIG. 12, the Y-direction moving arm 1 rotates and slightly protrudes from the storage portion 31. Then, by inserting a finger into the gap with the storage portion 31 and manually rotating the arm 1, it can be easily set at the embroidery position.
Further, as shown in FIG. 11B, the fixing protrusion 22 is locked to the upper surface of the X carriage, so that it does not fit into the groove 44 again. Therefore, once the push-up lever 24 is pushed and rotated, it may be released and the operability is extremely improved.
The above operation is the same when returning from the embroidery stop position where the fixing protrusion 22 and the groove 43 are fitted to the storage position.

In the above configuration, in the case of normal sewing, the Y-direction moving arm 1 is stored in the notch 3 as shown in FIG. At this time, since the arm upper surface 10 of the Y-direction moving arm 1 is flush with the bed upper surface 91, the sewing operation is not hindered, and conversely the bed upper surface 91 is enlarged, so that convenience is improved. Further, since the cover upper surfaces 35 and 35 and the embroidery frame attachment piece 19 also form the same surface, a uniform work surface can be obtained as a whole.
At the time of embroidery, as shown in FIG. 3, the Y-direction moving arm 1 is pulled out approximately 90 degrees, an embroidery frame (not shown) is fixed to the embroidery frame mounting piece 19, and embroidery is executed. Since the Y-direction moving arm 1 can be made large regardless of the length of the sewing machine body in the Y-direction, the amount of movement in the Y-direction can be greatly increased compared to the conventional built-in type. Embroidery can be realized.
Further, since the Y-direction moving arm 1 is securely fixed by the mechanism of the connecting portion 2 described above, it is possible to obtain a reliable operation. If the push-up lever 24 is pushed, the pivot shaft 21 is pushed up, the engagement between the fixing projection 22 and the grooves 43 and 44 is released, and at this time, the projection base 26 is pushed by the pivot spring 5 at the same time. The rotating substrate 2 rotates by a predetermined amount. Therefore, the turning operation of the arm 1 is simple. Further, since the fixing projection 22 is locked to the upper surface of the X carriage, it does not re-fit into the grooves 43 and 44, and the push-up lever 24 may be released if it is pushed once and rotated. Good sex.

  In the above configuration, the present invention includes the microswitch 6 as shown in FIGS. The microswitch 6 is mounted on the X carriage 40 and is operated by a striker surface 60 formed to project downward on the lower side of the base 12 of the arm 1.

The striker surface 60 turns on the microswitch 6 when the Y-direction moving arm 1 is at the embroidery stop position and the rotating shaft 21 is pushed down to engage the fixing projection 22 and the groove 43. ing. 13 and 14 show this state.
The microswitch 6 is configured to be turned off when the rotating shaft 21 is pushed up from the state of FIGS. 13 and 14.
Further, as shown in FIG. 15, when the Y-direction moving arm 1 is not in the embroidery stop position, the striker surface 60 is disengaged from the position of the microswitch 6, so that the microswitch 6 is turned off.

  In the above configuration, as shown in FIGS. 13 and 14, when the Y-direction moving arm 1 is at the embroidery stop position and the rotating shaft 21 is pushed down, the fixing projection 22 and the groove 43 are engaged. The micro switch 6 is turned on. On the other hand, when the rotating shaft 21 is pushed up, the microswitch 6 is turned off. As shown in FIG. 15, when the Y-direction moving arm 1 is not in the embroidery stop position, the microswitch 6 is turned off.

In this embodiment, drive control of the Y motor 15 and the X motor 46 is performed according to the signal of the micro switch 6.
FIG. 16 is a functional block diagram of this embodiment. The CPU 80 controls the entire sewing machine. The XY motor driving circuit 84 controls the Y motor 15 and the X motor 46 in accordance with the data from the stitch data storage device 86. By controlling the operation of the Y-direction moving arm 1 and the X-direction moving device 4, the embroidery is performed. Embroidery stitching is performed by a sewing machine motor drive circuit 81, a sewing machine motor 82, and a stitch formation mechanism 83.

The on / off signal of the micro switch 6 is input to the CPU 80, and when the micro switch 6 is on, the CPU 80 causes the XY motor driving circuit 84 to drive the Y motor 15 and the X motor 46.
When the micro switch 6 is turned off, the CPU 80 prohibits the driving of the Y motor 15 and the X motor 46, stops the sewing machine motor 82, and stops the embroidery work. At the same time, the display control device 85 is controlled and a message to that effect is displayed. The embroidery work is resumed by returning the Y-direction moving arm 1 to the embroidery position and restarting.
With the above configuration, when the Y-direction moving arm 1 is not at the embroidery stop position, or when the rotary shaft 21 is pushed up due to an erroneous operation of the push-up lever 24, embroidery work is prohibited. Therefore, it is possible to prevent damage to equipment and accidents. It is further desirable that the push-up lever 24 is stored or locked so as not to be operated during the embroidery work.

The perspective view of the front side which shows one Embodiment of this invention. The perspective view of the back side showing one embodiment of the present invention. The perspective view of the back side which shows operation | movement of one Embodiment of this invention. The perspective view which shows the structure of the Y direction movement arm 1 in one Embodiment of this invention. The perspective view which shows the structure of the Y direction movement arm 1 and the X direction movement apparatus 4 in one Embodiment of this invention. The perspective view which shows the structure of the connection part 2 in one Embodiment of this invention. The perspective view which shows the structure of the X direction moving apparatus 4 in one Embodiment of this invention. The schematic sectional drawing which shows the structure of the connection part 2 in one Embodiment of this invention. The other perspective view which shows the structure of the connection part 2 in one Embodiment of this invention. The schematic plan view which shows the structure of the rotation board | substrate 20 in one Embodiment of this invention. Explanatory drawing by the rotation spring 5 in one Embodiment of this invention. Explanatory drawing of rotation operation | movement of the arm in one Embodiment of this invention. Explanatory drawing of the microswitch 6 in one Embodiment of this invention. The expansion explanatory view of microswitch 6 in one embodiment of the present invention. The operation | movement explanatory drawing of the microswitch 6 in one Embodiment of this invention. The functional block diagram of one Embodiment of this invention.

Explanation of symbols

1: Y-direction moving arm, 2: Connection portion, 3: Notch portion, 4: X-direction moving device, 5: Rotating spring, 6: Micro switch, 10: Upper surface of arm, 11: Tip portion, 12: Base portion, 13 : Y guard rail, 14: Y carriage, 15: Y motor, 16: Y drive gear, 17: Y pulley, 18: Y drive belt, 19: embroidery frame mounting piece, 20: rotating substrate, 21: rotating shaft, 22: fixing protrusion, 23: spring, 24: push-up lever, 25: push-up link, 26: protrusion base, 30: cover, 31: storage part, 32: recess, 35: cover upper surface, 36: gap, 40 : X carriage, 41: X guide shaft, 42: Rotating hole, 43: Fixed groove when projecting, 44: Fixed groove when stored, 45: Drive belt, 46: X motor, 60: Striker surface, 80: CPU, 81: Sewing machine drive circuit, 82: Sewing machine 83: stitch formation mechanism, 84: XY motor drive circuit, 85: display control device, 86: stitch data storage device, 90: bed, 91: top surface of bed, 92: front surface of bed, 93: back surface of bed, 94: Free arm, 95: Arm, 96: Arm upright, 97: External, 98: Display part, 99: Fixed part.

Claims (2)

In an embroidery sewing machine that performs embroidery sewing by moving a holding device that holds an embroidery object in the X direction along the width direction of the sewing machine body and the Y direction along the depth direction of the sewing machine body.
An X-direction moving mechanism for moving the holding device in the X direction;
A Y-direction moving mechanism that is connected to the X-direction moving mechanism and is movable in the X-direction, and that is capable of connecting the holding device and moving the holding device in the Y-direction,
The Y-direction moving mechanism is rotatable between a stop position that protrudes in the Y direction and executes embroidery and a stop position that is stored along the X direction,
A locking device for locking rotation of the Y-direction moving mechanism when the Y-direction moving mechanism is at least at a stop position for executing the embroidery;
A release device for releasing the locking of the locking device;
When the Y-direction moving mechanism is at a stop position for executing embroidery, and when the rotation is locked by the locking device, a sensor that detects that and outputs a locking signal;
An embroidery sewing machine characterized by comprising: Said locking device;
A protrusion provided on the Y-direction moving mechanism;
A groove that is provided in the X-direction moving mechanism and that fits the protrusion when the Y-direction moving mechanism is at a stop position for executing embroidery;
Proximity means for applying a force in a direction in which the protrusion and the groove are brought close to each other,
The release device comprises a fitting release means for releasing the fitting by separating the protrusion and the groove against the force of the proximity means,
When the protrusion and the groove are separated from each other, a sensor that detects the fact and outputs an unlocking signal is provided.
The embroidery sewing machine according to claim 1.

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