JP3789459B2 - Sewing machine with automatic controller operation function - Google Patents

Description

  The present invention relates to control of a sewing machine controller, and more particularly, to a sewing machine having an automatic operation function of a controller having efficiency and safety by controlling a speed during operation of the controller.

  Conventionally, there are two types of speed control for motor-driven sewing machines: a type that drives and stops at a specified speed, and a type that accelerates and decelerates the speed of the sewing machine motor by a stepping operation called a foot-type controller. Yes.

  In general, in sewing a sewn product, a straight line is not sewed, but a curved portion or a short portion is often sewed, so that manual operation is often required.

  In this point, the sewing operation by the controller in the stepping operation allows the sewing operation with both hands to be opened and allows the sewing operation with both hands to be freely changed, and the speed can be freely changed even in a fine part such as a complicated part. The speed was adjusted by stepping on and off. This made it possible to perform excellent sewing work.

In the operation by the controller capable of such an excellent sewing operation, depending on the sewing product, for example, when sewing a relatively long distance such as a curtain and a table center, the controller must be stepped on during the sewing. In this respect, a type in which a designated speed is determined and turned on / off by hand or finger is advantageous. In recent years, sewing machines that embroidery with a sewing machine in the automatic embroidery mode have become widespread, but these have a relatively large number of stitches, and a controller is required for several minutes to a dozen minutes to complete the pattern. Had to operate. As described above, there is an inconvenience that the controller must be stepped on when sewing for a long time at substantially the same speed, such as when a straight line portion continues.

  Further, there is a demand for the controller to be operated immediately in order to sew a short portion following the long distance even when sewing the long distance.

The present invention relates to a controller that converts an operation amount by a stepping operation into an electric signal, and a sewing machine that is driven by speed control by the operation amount of the controller in order to control the drive to a normal variable speed control by the controller during operation of the sewing machine. A motor, speed memory means for automatically operating the sewing machine motor at an automatic operation speed, which is speed control for maintaining a constant speed during operation of the controller, and an automatic operation command means; and for starting automatic operation by operation The problem has been solved by using a sewing machine having an automatic operation function of a controller, characterized by comprising a starting means and a release means for releasing the automatic operation by an operation to make the controller perform a normal operation.
Further, the present invention solves the problem by providing a sewing machine having an automatic operation function of a controller characterized in that its starting means and releasing means are independently provided on the jaws of the sewing machine frame for operation. did.

  In the present invention, first, when sewing a long time at the same speed, and very efficient sewing work corresponding to various cases, secondly, the automatic operation is started at one place of the sewing machine frame. -There are effects such as being able to perform the release safely and reliably while visually checking the release.

  When these effects are described in detail, when it is preferable to maintain a constant speed, such as when a straight portion continues, or when sewing at a substantially the same speed for a long time, a means for starting automatic operation is provided. , You can sew as an automatic operation at a constant operation speed without using your hands or feet, eliminate the hassle of having to keep stepping on the controller as in the past, and perform extremely efficient sewing operations. it can. As a result, there is also an advantage that the fatigue level of the worker can be minimized.

  In addition, depending on the sewing, even if the sewing is performed for a long distance as described above, there is a case where it is desired to automatically operate the controller again or to manually perform a manual operation in order to sew a short portion following the distance. , If you want to make it manual after performing automatic operation, there is a release means to cancel the automatic operation of the sewing machine motor and make it normal operation, so you can immediately cancel the automatic operation, sewing the short part, If it is long, then it can be sewn again by automatic operation. Even in such a case, there is an effect that a very efficient sewing operation can be performed.

  In addition, since the sewing machine frame is provided with a means for starting automatic operation and a release means for releasing automatic operation to make it normal, each start / release is safe while visually observing. And there is an advantage that it can be operated reliably.

  Next, if the means for starting the jaw and the release means are provided, it can be operated very easily, and if the means for starting and the release means are the same switch, the configuration is simpler and the operation is easier. There is also an advantage that can be simplified.

During the operation of the sewing machine, the operation amount is converted into an electric signal for driving control to the normal variable speed control by the controller and the automatic operation speed control which is the speed control to keep the speed during the controller operation constant. A speed storage means for automatically operating at an automatic operating speed, which is a controller, a sewing motor that is driven by controlling the speed according to an operation amount of the controller, and a speed control that maintains the speed during operation of the controller constant. And the subject was solved by providing the automatic operation command means, the starting means for starting automatic driving | operation, and the cancellation | release means which cancel | release automatic driving | operation and make it normal operation.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 3 and 4 are schematic views of the present invention. As shown in FIG. 1, the sewing machine is pre-installed with a computer program and is configured to be capable of various types of embroidery by a control device including a central processing unit (CPU) 2, and is a composite embroidery capable of normal sewing and embroidery sewing. Sewing machines and embroidery sewing machines that can only be used for embroidery are included.

  The sewing machine frame 1 is provided with a pattern selection means 3 having a pattern selection key 3a for selecting various built-in patterns. A sewing machine motor 4 as a known drive motor is built in the sewing machine frame 1.

  The controller 5 is configured as a stepping type that controls the speed of the sewing machine motor 4. The controller 5 incorporates conversion means 5a for converting an operation amount into an electric signal.

  The drive circuit 6 is configured to drive the sewing machine motor 4 based on a speed control signal from the controller 5.

  The speed detection means 7 is configured to detect the speed (rotation speed) of the sewing machine motor 4 or a current value (current amount) corresponding to the speed, and is connected to the central processing unit (CPU) 2.

  A speed storage means 8 (a means for storing the number of revolutions or a means for storing the current amount) is a means for storing the automatic operation speed immediately after the automatic operation is started. It is built in the sewing machine frame 1 for automatic operation at an arbitrary speed.

  The automatic operation command means 9 is for instructing a speed that is automatically operated and stored, and is connected to a central processing unit (CPU) 2.

  The automatic operation speed detected by the speed detection means 7 during the automatic operation is compared with the storage speed stored in the speed storage means 8 when the automatic operation is performed, and only when both are the same speed The automatic operation command means 9 determines the automatic operation to continue. That is, the automatic operation speed is configured to match the storage speed. This is for maintaining the stored automatic operation speed even when the automatic operation speed is changed for some reason, and a feedback circuit is configured.

  Automatic operation is self-maintained by the speed detection means 7, speed storage means 8, and automatic operation command means 9 that perform such operations. With this configuration, the automatic operation speed can be accurately and safely.

  Further, immediately after the automatic operation is started, the automatic operation speed stored in the speed storage unit 8 may be held as a constant output by the automatic operation command unit 9. In some cases, the automatic operation command means 9 may hold the automatic operation.

  The start operation means 10 is for starting the sewing machine motor 4 to automatically operate at an arbitrary predetermined speed. The start operation means 10 is provided at an appropriate position of the sewing machine frame 1 (for example, the jaw portion 1a of the sewing machine frame 1 or the like). ).

  The release means 11 is means for releasing the automatic operation of the sewing machine motor 4 and changing it to normal operation, and is provided at an appropriate location of the sewing machine frame 1 (for example, the jaw portion 1a location of the sewing machine frame 1). It has been. In the embodiment of FIG. 3, the start operation means 10 and the release means 11 are composed of the same member. There is an advantage that it is extremely easy to operate.

  In the embodiment of FIG. 4, the start operation means 10 and the release means 11 are provided separately and independently on the jaw 1 a. Even in this case, it is easy to operate.

  Further, in the case of an emergency stop, operation is performed with a stop switch 12 provided at a position of the jaw 1a of the sewing machine frame 1.

The explanation will be made based on the flowchart shown in FIG. 2 for its operation, first, power (see S1) the sewing operation is an ON state, (see S2) operates the controller 5, drives the sewing machine motor 4 you operation by (see S3). Then, whether or not to perform automatic operation is examined (see S4), and when automatic operation is desired, the start operation means 10 is operated to automatically operate the sewing machine motor 4 at an arbitrary predetermined speed during operation. Thus, normal sewing or embroidery sewing can be automatically performed at a predetermined speed.

  At this time, the speed (number of rotations) of the sewing machine motor 4 during the automatic operation or the current value (current amount) corresponding to the speed is stored (see S5). Further, the speed (number of revolutions) of the sewing machine motor 4 or the current value (current amount) corresponding to the speed is detected (see S6). If the automatic operation speed is the same as the storage speed, the automatic operation continues. (See S7). That is, the automatic operation speed is self-maintained so that the operation speed matches the stored speed.

Next, it is examined whether or not to cancel the automatic operation (see S8). If it is desired to cancel the automatic operation, the automatic operation of the sewing machine motor 4 is canceled by operating the release means 11, and the controller 5 It changes to normal driving | operation by operation of (refer S9). Then, it is examined whether or not to end the operation (see S10). When it is desired to end the operation, the operation is ended.

  The sewing machine sewing work is completed by repeating part or all of these operations. Of course, automatic operation may not be performed.

Block diagram of the present invention Flowchart diagram of the present invention Schematic diagram of the present invention Schematic representation of another embodiment of the present invention

Explanation of symbols

  1: sewing machine frame, 1a: jaw, 2: central processing unit, 4: sewing machine motor, 5: controller, 5a: conversion means, 6: drive circuit, 7: speed detection means, 8: speed storage means, 9: Automatic operation command means, 10: start operation means, 11: release means

Claims (2)

A controller that converts an operation amount by a stepping operation into an electric signal in order to drive and control to a normal variable speed control by the controller during operation of the sewing machine; a sewing machine motor that is driven by speed control by the operation amount of the controller; Speed control means for automatically operating the sewing machine motor at an automatic operation speed, which is speed control for keeping the speed during operation of the controller constant, automatic operation command means, and start means for starting automatic operation by operation A sewing machine having an automatic operation function of a controller, characterized in that it comprises release means for releasing the automatic operation by an operation and making the controller perform a normal operation . 2. The sewing machine having an automatic operation function of a controller according to claim 1, wherein said starting means and said releasing means are provided independently on a jaw part of a sewing machine frame .

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