JPH069036Y2 - Safety device for sewing machine with embroidery function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a sewing machine with an embroidery function, and more particularly to a safety device for an embroidery frame carriage.

(Conventional example) In a conventional sewing machine with an embroidery function, when the sewing machine frame is turned over backward for the purpose of inspection or the like while the embroidery frame is attached to the sewing machine, the carriage that supports the embroidery frame is the sewing machine machine. Since it protruded to the rear of the frame, it collided with the surface of the machine on which the sewing machine is mounted, and the carriage was often damaged by the weight of the sewing machine.

(Problems to be solved by the invention) In the sewing machine capable of selectively switching to one of the embroidery ordinary sewing modes, when the mode is switched to the embroidery mode, the sewing machine frame is used for the purpose of inspecting the sewing machine. When tilted backward, the carriage that supports the embroidery frame automatically returns to its original position to avoid collision with the base, and a warning device such as a buzzer tries to notify the operator of the dangerous condition. is there.

(Means for Solving the Problems) The present invention is a sewing machine capable of selectively switching one of the embroidery ordinary sewing modes, and when the mode is switched to the embroidery mode, the sewing machine frame is tilted backward or the sewing machine is sewn. When the machine frame is lifted, the switch is operated, and the carriage that supports the embroidery frame is automatically returned to the origin position within the drive range by the operation of the switch, and the warning device is operated to cause a danger to the operator. It is intended to let you know.

(Operation) The present invention relates to an arm machine frame in which a drive shaft of a sewing machine frame is rotatably supported and is vertically moved by the rotation of the drive shaft, and a needle bar that is amplitude-controlled by another control drive device is supported. An embroidery drive frame including an embroidery frame drive device is disposed below the head machine frame. A carriage driven by the embroidery frame driving device is arranged so as to project from the opening of the frame, a detachable embroidery frame is fixed to the end of the carriage, and embroidery ordinary sewing switching means is arranged on the sewing machine frame. Then, an operation switch is arranged on the base adhering surface of the embroidery drive machine frame, and when the operation switch detects tilting of the sewing machine frame, the embroidery mode already selected by the operation of the front embroidery normal sewing switching means is selected. And the key being embroidered It is characterized in that the carriage is returned to the origin position.

(Embodiment) The structure of the present invention will be described with reference to FIGS.
In the figure, 1 is a sewing machine frame, which comprises an arm machine frame 2 and a bed machine frame 3, and a drive shaft (not shown) is rotatably supported by the arm machine frame 2 and An exposed mouse wheel 4 is attached to one end of the drive shaft outside the machine frame, and a needle bar (not shown) and a presser bar 5 which can be vertically moved via a balance crank (not shown) and the like are provided at the other end. The embroidery drive machine frame 6 is mounted below the bed machine frame 3, and the embroidery drive machine frame is formed with an elongated opening 7 parallel to the longitudinal direction of the bed machine frame 3. An embroidery frame carriage 8 connected to the embroidery frame driving device (not shown) disposed in the embroidery driving device frame 6 from the opening and driven by the embroidery frame driving device is exposed to the rear outside of the sewing machine frame. An embroidery frame 9 is detachably arranged at the end of the carriage.

Reference numeral 10 denotes an operation switch, which is disposed below the sewing machine frame 1 in front of the base bonding surface 11 of the embroidery driving machine frame 6, and the operating terminal 12 projects downward from the base bonding surface. It is pressed by the surface 13 and forms an inclination state detecting means.

FIG. 4 is a block diagram of an embodiment of the present invention, in which 14 is embroidery ordinary sewing switching means, 15 is pattern selecting means, 16 is pattern displaying means such as liquid crystal or light emitting diode, and these are the arm machines. It is arranged on the front surface of the frame 2.

Further, 17 is embroidery data storage means, 18 is pattern formation information storage means, 19 is selected pattern storage means, 20 is a stepping motor for needle bar amplitude, 21 is a stepping motor for feed adjustment, 22 is a motor for sewing machine operation, and 23. Is a warning means such as a buzzer, and 24 is a central processing unit, which are arranged inside the sewing machine frame 1 and the embroidery ordinary sewing switching means 14 arranged on the front surface of the arm frame 2, a pattern. Selection means 1
5, the pattern display means 16 is connected to the central processing unit 24, and the bed machine frame 3 is provided with a yarn catching device and a feeding device (neither shown).

Since the structure of the embodiment of the present invention is as described above, when the ordinary sewing is selected by the operation of the embroidery ordinary sewing switching means 14, the needle bar can be moved up and down and the amplitude can be moved. The pattern selected by the pattern selecting means 15 is sewn in cooperation with each other.

Next, when embroidery is selected by operating the embroidery ordinary sewing switching means 14, the needle bar moves only in the vertical direction and the movement of the feeding device is stopped, but the carriage 8 to which the embroidery frame 9 is attached is driven by the embroidery frame driving device. Since the control movement is performed, desired embroidery can be performed by selecting the embroidery pattern by the selection means 15. The drive range of the embroidery frame 9 is limited to a specific range, and the drive is started from the origin position of the drive range. The origin position is the carriage 8 that supports the embroidery frame 9.
As shown in FIG. 1, the position is closest to the arm rising portion in the X direction and closest to the bed frame 3 in the Y direction.

When the embroidery mode is changed to the embroidery mode by operating the embroidery ordinary sewing switching means 14, the operation switch 10 and the alarm means 23 are ready to operate. Therefore, in the embroidery mode, the sewing machine frame 1
When the needle is tilted backward or lifted, the operation switch 10 is operated to switch the embroidery mode to the normal sewing mode, and if the embroidery is in progress, the embroidery is interrupted and the carriage 8 is automatically set to the origin position. When the alarm device 23 is returned and the alarm device 23 is activated, an alarm sound is generated.

When the carriage 8 returns to the original position, even if the sewing machine frame is tilted backward, it is possible to avoid collision with the base, and the carriage is not damaged even if an external force is directly applied.

Since the operation switch 10 is not operated in the normal sewing mode, the carriage 8 and the alarm device 23 are not operated even if the sewing machine frame is tilted backward.

(Effect) Since the present invention has the above-described structure and operation, when the sewing machine frame is tilted backward or lifted in the embroidery mode, the embroidery is interrupted during the embroidery and the carriage is returned to the origin position. Therefore, it is possible to avoid the carriage from colliding with the table even if it is tilted further, even if it collides, it is possible to avoid damage, and the alarm device also activates to alert the operator so that dangerous acts can be stopped. Therefore, the practical effect is extremely large.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a rear perspective view of a sewing machine equipped with the present invention, and FIG. 2 is a rear perspective view of the sewing machine showing a return state of a carriage of the present invention to an original position. , FIG. 3 is a side view of the state of FIG. 1, FIG. 4 is a block diagram of the present invention, 1 is a machine frame, 2 is an arm frame,
Reference numeral 3 is a bed machine frame, 6 is an embroidery driving machine frame, 7 is an opening, 8 is a carriage, 9 is an embroidery frame, 10 is an operation switch, 11 is a base bonding surface, and 14 is an embroidery ordinary sewing switching means.

Claims (1)

[Scope of utility model registration request] 1. A sewing machine frame including an arm frame for rotatably supporting a drive shaft, a bed frame including a thread catcher and a feeder, and a carriage driven by an embroidery frame drive. Embroidery normal sewing switching means for selectively switching between the embroidery sewing mode using the embroidery frame and the normal sewing mode not using the embroidery frame, and the sewing machine frame arranged on the sewing machine frame and operated when the embroidery mode is selected. And a tilted state detection means for detecting tilting or lifting of the sewing machine. The safety device for a sewing machine with an embroidery function is characterized in that the embroidery sewing drive is interrupted in response to the tilted state detection signal and the carriage is moved to the origin position.