JP3907071B2 - Embroidery stitching device with start permission function - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an embroidery sewing apparatus having a start permission function.
[0002]
[Prior art]
Sewing machines having a motor that drives a sewing mechanism by an electric motor are widely used. An apparatus for performing embroidery sewing using a sewing mechanism of a sewing machine having such a motor has been implemented by the applicant of the present application. This is proposed in Kosho 57-24305.
According to this embroidery sewing device, it is possible to construct a sewing machine that can be easily embroidered by connecting to an existing sewing machine, and easily perform embroidery sewing without purchasing a new sewing machine having an embroidery sewing function. There is an advantage that can be done.
[0003]
[Problems to be solved by the invention]
However, in the above-described embroidery sewing device, it is necessary to position the embroidery frame at a predetermined origin (home position) at the time of starting, and the operation at the time of starting needs to be performed with the needle of the sewing machine raised upward. If the embroidery frame is moved while the needle is lowered, the cloth and the sewing needle mechanism are damaged. For this reason, the conventional embroidery sewing apparatus has a drawback that it is necessary for the operator to press the start button of the embroidery sewing apparatus after confirming the state of the sewing machine, which places a heavy burden on the operator.
The object of the present invention is to solve the above-mentioned problems of the prior art.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, an embroidery sewing apparatus using a sewing machine equipped with a sewing mechanism of the present invention is an embroidery sewing apparatus using a sewing mechanism of a sewing machine.
The means for holding the embroidery object to perform embroidery sewing by the sewing mechanism of the sewing machine, the means for giving pattern data regarding the pattern to be embroidered, and the phase of the sewing operation of the needle of the sewing mechanism of the sewing machine are detected. In response to the detected needle phase from the detecting means, the holding means is moved by a movement amount corresponding to the pattern data, and at a predetermined origin position at the time of starting. The means for moving the means for holding, the means for moving the means for holding, and the means for moving the means for holding when the power is turned on are temporarily prohibited and put into a stopped state, Next, it is determined whether or not the embroidery sewing device is in a startable state, and a start permission device for determining whether to allow or disallow start, the start permission device detects the phase. A means for determining whether or not the means for moving can be started based on a detection signal from the means for making it possible to start the means for moving based on the determination;
Is a basic feature.
The means for moving the means for holding can be started by means for enabling start. The means for enabling the start determines whether it is possible to start the means for moving in accordance with the detected phase of the needle, and if the needle is moving downward, starts the means for moving. It is not possible to start only when the needle is in the upper position. Therefore, there is no risk of causing damage to the cloth or the needle mechanism.
Further, in addition to the above, means for detecting the vertical position of the cloth presser of the sewing machine of the sewing machine because there is a risk of breakage even if the means for holding is moved while the cloth presser is lowered. It is desirable to provide further. In this case, the means for starting determines whether it is possible to start the means for moving based on the vertical position detection signal of the cloth presser in addition to the needle phase detection signal.
Further, it is desirable that the moving means moves the holding means to a predetermined origin position when the startable means is enabled by the startable means. With this configuration, it is possible to accurately control the movement of the means for holding the origin position as a reference.
In addition, it is preferable that the information processing apparatus further includes means for notifying the operator of the determination result when the means for enabling start is determined to be impossible to start. As a means for this notification, visual display by a display device, notification by sound by a sound device, or the like is possible. In response to this notification, the operator can raise the sewing machine needle or the cloth presser upward to make it ready for starting.
[0005]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, pattern data corresponding to a pattern to be embroidered (graphics, characters, symbols, etc.) is applied from the pattern data adding means 1. The pattern data adding unit 1 is usually a storage device such as a ROM or a RAM. The control means 2 controls the drive means 3 according to the pattern data, and the drive means 3 is connected to a holding means 4 such as an embroidery frame for holding a cloth or the like to be embroidered. In response to a control signal from the control means 2, the holding means 4 is configured to move in the XY directions. The holding means 4 is installed so that the seam is formed by the existing sewing machine needle mechanism 51.
A pattern corresponding to the pattern data given from the pattern data giving means 1 is displayed on the display means 7.
The phase detection means 5 is attached to an appropriate position (for example, the presser foot mechanism 53) in the vicinity of the sewing needle mechanism 51, and is configured to detect the vertical position of the sewing needle mechanism 51. A presser position detecting means 6 for detecting the vertical position of the presser foot mechanism 53 is also provided at an appropriate position so as to detect a state in which the presser foot mechanism 53 is raised.
The control means 2 is further configured to control the sewing machine motor device 50 on the sewing machine side, and controls the stop, start and speed of the sewing machine motor device 50. The sewing machine motor device 50 is an existing one provided on the sewing machine side, and includes a motor and a device for controlling driving of the motor.
[0006]
The start permission means 8 is for enabling the control means 2 to be started. Unless the start permission signal is output from the start permission means 8 to the control means 2, the control means 2 cannot drive the drive means 3. Yes.
When the embroidery device is started, a start non-permission signal is output from the start permission means 8 to the control means 2, and the drive means 3 is not driven and the holding means 4 is stopped when starting.
Detection signals from the phase detection means 5 and the presser foot position detection means 6 are input to the start permission means 8. In the start permission means 8, the sewing machine needle mechanism 51 is raised upward and the cloth held by the holding means 4. When the state of being separated from the cloth is detected, and the state where the cloth presser mechanism 53 is also raised and separated from the cloth is detected, a start permission signal is output to the control means 2.
The degree to which the sewing needle mechanism 51 is raised may be determined as appropriate. For example, a state where the sewing needle mechanism 51 is raised a predetermined distance from the cloth can be set as the detection position.
[0007]
When the start of the embroidery device is instructed, the start permission means 8 causes the sewing needle mechanism 51 to be raised and the cloth presser mechanism 53 to be raised by signals from the phase detection means 5 and the cloth presser position detection means 6. When it is detected, a start permission signal is output to the control means 2. At other times, a start non-permission signal is output. When the non-permission signal is output, the control means 2 displays a message to that effect on the display means 7 and prompts the operator to raise the sewing needle mechanism 51 and the presser foot mechanism 53 upward.
When the start permission signal is output from the start permission means 8, the control means 2 controls the drive means 3 so that the holding means 4 is positioned at the origin position (home position), and then given from the pattern data giving means 1. Based on the pattern data, the control means 2 is controlled to move the holding means 4 in the X and Y directions to perform embroidery stitching. When the holding means 4 is moved, the phase of the sewing needle mechanism 51 is detected from the phase detecting means 5 and moved when the needle is raised upward.
[0008]
An example of the structure of the pattern data supplied from the pattern data providing means 1 is shown in FIG. The pattern data includes XY control data for moving the holding unit 4 in the XY directions and display data for displaying on the display unit 7. End data is provided after the final data. The control means 2 drives the holding means 4 based on the XY control data from the pattern data giving means 1. At this time, it is configured to take a timing so as to move the holding means 4 when the needle of the sewing needle mechanism 51 is raised by a signal from the phase detection means 5.
At the same time, the control means 2 pre-reads the pattern data, outputs a deceleration signal of the sewing machine speed to the sewing motor device 50 several times before the predetermined stitch of the end data, and further sends a stop signal of the sewing machine several times before the predetermined stitch. The data is output to the device 50. After the stop signal is output, the sewing machine stops after a predetermined number of stitches are performed due to the inertia of the motor.
With the above configuration, the sewing machine motor device 50 can be automatically stopped when the pattern sewing using the pattern data is completed.
[0009]
The control means 2 also controls the speed of the sewing machine motor device 50 corresponding to the XY control data, and controls so that the speed of the sewing machine motor device 50 is changed between a small portion and a large portion of the XY movement amount. It is configured.
[0010]
3 is a specific block diagram of the embroidery sewing apparatus X, FIG. 4 is an external perspective view of the embroidery sewing apparatus X attached to the sewing machine A, and FIG. 5 is an external perspective view of the embroidery sewing apparatus X removed from the sewing machine.
The embroidery sewing apparatus X includes a holding portion 25 that holds a free arm of the sewing machine A, and is fixed by a holding knob 26.
As shown in FIG. 4, the embroidery frame 19 is supported by an XY drive mechanism 24 and moves in the XY directions. The embroidery frame 19 is configured to be set on the lower side of the sewing machine needle mechanism 51 of the existing sewing machine A, and embroidery sewing is executed by moving the cloth XY with a cloth interposed therebetween.
A phase detection sensor 18 is provided in the vicinity of the sewing needle mechanism 51. The position of the sewing needle mechanism 51, that is, the position of the sewing needle is detected and input to the central processing unit 10, and the sewing needle is raised upward. The embroidery frame 19 is configured to be moved when the embroidery frame is on. A photo sensor or the like can be used as the phase detection sensor 18, and this signal is sent to the central processing unit 10, which controls the X motor 21 and the Y motor 22 via the stepping motor driving device 20. Thus, the embroidery frame 19 is configured to move in the XY directions.
Further, a presser foot mechanism position detection sensor 30 for detecting the vertical position of the presser foot mechanism 53 is also provided, and it is detected that the presser foot mechanism 53 is raised to an upper position and input to the central processing unit 10. Is configured to do.
Similarly, a photo sensor or the like can be used as the cloth presser mechanism position detection sensor 30.
Reference numeral 54 denotes a pattern selection dial, and 55 denotes a drop lever.
[0011]
Pattern data is stored in the pattern data storage device 11. In this embodiment, pattern data of a plurality of patterns is stored, and the user can select an arbitrary pattern by the pattern selection device 14. The pattern data of the pattern selected by the user is stored in the selected pattern storage device 13, and based on the stored pattern data, the central processing unit 10 controls the stepping motor drive device 20 to move the embroidery frame 19 in the XY directions. Configured to control.
The embroidery sewing device X is provided with a display device 17 that displays a pattern based on the pattern stored in the pattern data storage device 11 and the display data of the pattern data of the selected pattern. It is comprised so that the shape of a typical pattern may be shown.
The pattern selection device 14 is provided on the side of the display device 17 so that the user can select a desired pattern while viewing the display device 17.
[0012]
The start permission device 12 temporarily prohibits the operation of the stepping motor drive device 20 when the power is turned on, and then determines whether or not the embroidery sewing device X is in a startable state and determines whether or not the start is permitted. Device. The start permission device 12 determines whether or not the start can be started based on the detection signals of the phase detection sensor 18 and the presser foot mechanism position detection sensor 30 input to the central processing unit 10, and the sewing needle mechanism 51 and the presser foot are determined. Both the mechanisms 53 are raised, and a predetermined state in which the mechanism 53 is not in contact with the cloth held by the embroidery frame 19 is detected, and a start permission signal is output to the central processing unit 10. Conversely, when either the sewing needle mechanism 51 or the cloth presser mechanism 53 is lowered downward and the needle is stuck in the cloth or the cloth presser is in contact with the cloth, the central processing unit 10 A start non-permission signal is output.
When the start is not permitted, the central processing unit 10 displays a message to that effect on the display device 17 so that the operator operates the sewing machine A and raises the sewing needle mechanism 51 and the presser foot mechanism 53 upward. It is supposed to prompt. Further, when the start is permitted, the embroidery frame 19 is moved to a predetermined origin position (home position) via the stepping motor drive device 20, and then a predetermined embroidery sewing is executed.
[0013]
The central processing unit 10 is connected to the controller connection terminal 52 of the sewing machine A through a drive signal transmission device 23 such as a cable. As described above, the start, stop and speed of the sewing machine motor device 50 on the sewing machine side are embroidery stitched. Control is performed from the device X side.
A start / stop / speed command device 16 is provided on the side portion of the display device 17 so that the sewing machine motor device 50 can be started, stopped, and its speed adjusted by a user command. The phase in the vertical direction of the sewing needle mechanism 51 due to the driving of the sewing machine motor 50 is detected by the phase detection sensor 18 as described above, and the stepping motor driving device 20 is controlled according to the driving timing of the sewing machine motor device 50. The embroidery frame 19 is moved. Therefore, when the sewing machine motor device 50 is stopped, the embroidery frame 19 is also stopped.
[0014]
The central processing unit 10 pre-reads the pattern data stored in the selected pattern storage device 13, and pre-reads the end data as shown in FIG. 2 and stores it in the sewing machine drive stop / speed control program storage device 15. Based on the stored program, the sewing machine motor device 50 is decelerated from before the predetermined stitch, and a stop signal is output between the predetermined stitches to stop the sewing motor device 50.
Further, the speed of the sewing machine motor device 50 is automatically adjusted according to the movement amount in the XY directions corresponding to the stitches of the pattern, and is similarly stored in the sewing machine drive stop / speed control program storage device 15. The speed is automatically adjusted based on the program.
[0015]
Next, the operation will be described with reference to FIG.
First, the embroidery sewing device X is mounted on the sewing machine A body as shown in FIG. 4, and the drive signal transmission device 23 is connected to the controller connection terminal 52. Further, the embroidery frame 19 is set below the sewing needle mechanism 51. The sewing machine A selects straight stitching with the pattern selection dial 54 and sets the feed dog below the needle plate with the drop lever 55.
When the installation of the embroidery sewing device X is completed and the embroidery sewing device X is turned on (step S1), the start permission device 12 prohibits the driving of the stepping motor drive device 20, and the X motor 21 and the Y motor 22 are turned on. A stop state is set (step S2).
Then, the start permission device 12 determines whether or not the sewing needle is a predetermined distance from the cloth based on a signal from the phase detection sensor 18 (step S3), and if not, sends a start disapproval signal to the central processing unit 10. Output. In response to this, the central processing unit 10 displays a message on the display device 17 (step S4) and prompts the operator to perform a needle raising operation. When it is detected that the sewing needle is in the position on the cloth when the needle raising operation is performed, it is next determined whether or not the cloth presser mechanism 53 is in the upper position by a signal from the cloth presser mechanism position detection sensor 30. If not, a start non-permission signal is output to the central processing unit 10. In response to this, the central processing unit 10 displays a message on the display device 17 (step S6) and prompts the operator to raise the presser foot mechanism 53. When the operator raises the presser foot mechanism 53, this is detected by the presser foot mechanism position detection sensor 30, and the start permission device 12 outputs a start permission signal to the central processing unit 10 (step S7). The central processing unit 10 controls the stepping motor driving device 20 to move the embroidery frame 19 to the origin position (step S8), and starts embroidery.
The central processing unit 10 displays all the patterns stored in the pattern data storage device 11 on the display device 17 (step S9), and the user selects a pattern based on the display device 17 (step S10). When the user presses the start / stop / speed command device 16 (step S11), the central processing unit 10 controls the sewing motor device 50 through the drive signal transmission device 23 to start the sewing machine (step S12). The signal of the phase detection sensor 18 is checked (step S13), and when the needle is raised upward, the XY control data of the pattern data is read (step S14), and the stepping motor drive device 20 is based on the control data. The X motor 21 and the Y motor 22 are driven and controlled to move the embroidery frame 19 in the XY directions (step S15).
When the end of the pattern data is approaching (step S16), the sewing machine motor device 50 is set to operate at a low speed, and then a stop signal for the sewing machine motor device 50 is output to stop the sewing machine motor device 50 (step S17).
[0016]
In the embodiment described above, the embroidery frame 19 is not moved until the safety mode is entered by the start permission device 12 at the start and the sewing needle mechanism 51 and the presser foot mechanism 53 are raised. It is possible to prevent accidents that damage the cloth, the sewing machine needle mechanism 51, or the like.
Further, the operator can instruct the start of the embroidery sewing device X regardless of the state of the sewing machine A, and only has to operate the sewing needle mechanism 51 and the presser foot mechanism 53 of the sewing machine A according to the display on the display device 17. There are effects such as improved operability.
[0017]
【The invention's effect】
As described above, the embroidery sewing apparatus having the start permission function according to the present invention can prevent an accident that damages the cloth, the sewing needle mechanism, or the like at the start. In addition, there is an effect that the operability is improved because the operator does not need to check the state on the sewing machine side at the start.
[Brief description of the drawings]
FIG. 1 is a functional block diagram showing an embodiment of the present invention.
FIG. 2 is an explanatory diagram of the structure of pattern data in one embodiment of the present invention.
FIG. 3 is a block diagram showing a specific configuration of an embodiment of the present invention.
FIG. 4 is an external perspective view of an embodiment of the present invention.
FIG. 5 is an external perspective view of an embodiment of the present invention.
FIG. 6 is a flowchart showing the operation of one embodiment of the present invention.
[Explanation of symbols]
1: pattern data giving means, 2: control means, 3: driving means, 4: holding means, 5: phase detecting means, 6: presser foot position detecting means, 7: display means, 8: start permission means, 10: center Arithmetic processing device, 11: pattern data storage device, 12: start permission device, 13: selected pattern storage device, 14: pattern selection device, 15: sewing machine drive stop / speed control program storage device, 16: start / stop / speed command Device: 17: Display device, 18: Phase detection sensor, 19: Embroidery frame, 20: Stepping motor drive device, 21: X motor, 22: Y motor, 23: Drive signal transmission device, 24: XY drive mechanism 25: Clamping part, 26: Clamping knob, 30: Fabric presser mechanism position detection sensor, 50: Sewing motor device, 51: Sewing needle mechanism, 52: Controller connection terminal, 53: Fabric presser mechanism, 54: Pattern selection Dial, 55: drop lever.

Claims (4)

In the embroidery sewing device that uses the sewing mechanism of the sewing machine,
Means for holding an embroidery object for performing embroidery sewing by a sewing mechanism of the sewing machine;
Means for giving pattern data on the pattern to be embroidered;
Means for detecting the phase of the sewing operation of the needle of the sewing mechanism of the sewing machine;
In response to the detected needle phase from the detecting means, the means for holding is moved by a moving amount corresponding to the pattern data, and the means for holding at a predetermined origin position at the start Means for moving, holding means for moving, and
When the power is turned on, the operation of the means for moving the holding means is temporarily prohibited to be stopped, and then it is determined whether or not the embroidery sewing apparatus is in a startable state, and start permission and non-permission are determined. A start permission device for determining
The start permission device determines whether the means for moving can be started based on a detection signal from the means for detecting the phase, and can start the means for moving based on the determination. it is a means for the,
An embroidery sewing apparatus having a start permission function characterized by the above. Means for detecting the vertical position of the cloth presser of the sewing machine;
Whether the means for starting can start means for moving based on the detection signal from the means for detecting the vertical position in addition to the detection signal from the means for detecting the phase To judge,
An embroidery sewing apparatus provided with the start permission function according to claim 1. When the means for moving is enabled to start by the means for enabling start, the means for holding is moved to a predetermined origin position;
An embroidery sewing apparatus comprising the start permission function according to claim 1. Means for notifying the operator of the determination result when the means for enabling the start determines that the means for moving cannot be started;
An embroidery sewing apparatus having a start permission function according to any one of claims 1 to 3 , further comprising:

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