TW201315855A - Sewing machine capabale of mode conversion and sewing method using the same - Google Patents

Abstract

Provided are a sewing machine and a sewing method using the same, in which a mode conversion can be made to facilitate correction of sewing errors occurring during a sewing process performed with automatically-set sewing parameters. The mode convertible sewing machine includes: a pedal configured to receive a user command initiating a sewing process; a manipulation panel configured to receive sewing data including sewing parameters; a control block configured to control driving of the sewing machine based on the sewing parameters; and a mode change switch configured to generate a mode change signal and transmit the mode change signal to the control block to drive the sewing machine in an automatic mode where the sewing machine is automatically set by the sewing parameters or in a manual mode where the sewing parameters are prevented from automatically being applied to the sewing machine.

Description

Sewing machine capable of mode conversion and sewing method using the same

The present invention relates to a sewing machine, and more particularly to a sewing machine capable of mode conversion and a sewing method using the sewing machine for easily correcting a sewing failure occurring in a sewing process in which sewing parameters are automatically set and executed.

In general, the sewing machine is used as a mechanical device for sewing fabrics such as cloth, leather, and paper. With the increasing demand for sewing products and the need for high-grade sewing, and the rapid increase in productivity, it has been developed that cannot be used in existing sewing machines. Find the variety of sewing features.

Recently, an automatic setting sewing machine that automatically inputs a sewing parameter such as the number of stitches, the presser foot pressure, the presser foot height, and the thread tension that the operator manually inputs to the sewing machine to perform the sewing process to the sewing machine in the form of sewing data has been proposed. Such an automatic setting of the sewing machine can shorten the time required for the sewing process.

As an example of a sewing machine in which the sewing parameters are automatically set, a "sewing machine" that performs a sewing process based on sewing materials is disclosed in Korean Laid-Open Patent Publication No. 10-2009-0103816. According to the sewing machine disclosed in the above patent document, the operations of various motors and drivers of the sewing machine are controlled based on the sewing data. However, such a conventional sewing machine does not provide any means for coping with the defects occurring in the sewing process. That is, in the conventional automatic setting sewing machine, since the sewing parameters are automatically set, the sewing is repeatedly performed. The process is so that even if a defect occurs in the sewing process, the subsequent sewing process is started immediately, so there is a problem that the sewing process cannot be corrected.

Referring to the sewing process shown in Fig. 1, the problems of the prior art as described above are specifically explained below. The sewing process shown in Fig. 1 is a sewing process S (S1, S2) which is repeatedly executed in the same fabric 1 for the linear sewing, according to the number of stitches Nn included in the sewing parameters, or alternately with other fabrics 1 (S1, S2) ). In the linear sewing process of Fig. 1, even if the sewing is performed according to the predetermined number of predetermined stitches Nn, sewing may occur depending on the difference in the skill of the operator of the moving fabric 1, the difference in the material characteristics of the fabric 1, and the like. The thread does not reach the expected final position (P ₀ is the starting point of the sewing process S, and P ₁ is the position of the end point of the sewing process S). However, even if it is determined that such sewing failure occurs, the conventional sewing machine only needs to complete the sewing according to the predetermined number of stitches Nn described above, and it is determined that the sewing process S1 has been terminated, and the number of stitches Nn regarding the subsequent sewing process S2 is used as the sewing parameter. The re-setting is performed, and the number of sewing stitches is recalculated to perform the subsequent sewing process. As described above, in the conventional sewing machine, even if the first sewing process S1 is not terminated at the intended position P ₁ ' and sewing failure occurs, the sewing failure can be corrected without affecting the number of stitches of the subsequent sewing process S2. . In other words, the conventional sewing machine does not provide a means for easily correcting the sewing failure that may occur during the process of repeatedly setting the sewing process S, and thus the quality of the manufactured sewing product and the productivity of the sewing process are present. The problem of falling.

The present invention provides a sewing machine capable of mode conversion and a sewing method using the sewing machine, and a sewing machine for automatically setting a sewing parameter can easily compensate for a sewing failure occurring in the middle of executing a sewing process.

The present invention provides a sewing machine capable of mode conversion and a sewing method using the sewing machine, and a sewing machine for automatically setting sewing parameters for executing a plurality of sewing processes, if sewing failure occurs in one of the plurality of sewing processes described above, Before the subsequent sewing process, the sewing machine mode can be switched to the manual mode to easily correct the sewing failure that occurs. If the sewing correction is completed, the sewing machine mode is switched to automatic and the subsequent sewing process is executed.

A mode-switchable sewing machine according to an embodiment of the present invention may include: a pedal for receiving a user command for instructing start or end of a sewing process; an operation panel for receiving input of sewing material including sewing parameters; and a control module according to The sewing parameter controls the driving of the sewing machine; the mode switching switch generates a mode switching signal for transmitting to the control module, so that the automatic mode in which the setting of the sewing parameter is applied to the sewing machine and the setting of the sewing parameter are blocked. Drive in any of the manual modes.

The sewing parameter may include at least one of the number of stitches, the stitch width, the presser foot pressure, the presser foot height, the thread tension, and the spindle speed.

The sewing machine described above may include a counter that measures the number of stitches by the number of revolutions of the spindle.

The sewing machine described above may include a correction processing portion for use in a manual mold The number of stitches measured by the above counter is obtained as correction data, and the above-mentioned correction data is selectively displayed.

Further, a mode-switchable sewing method according to an embodiment of the present invention utilizes a sewing machine that receives a user command for indicating the start or not of a sewing process through a pedal, and the above method may include the steps of: receiving a sewing parameter for setting Sewing data; driving the sewing machine to start the sewing process in the automatic mode in which the setting of the sewing parameters is applied; determining whether the sewing failure occurs or not; if the sewing failure is not determined, executing the sewing process in the automatic mode And if the occurrence of the sewing failure is determined, switching the mode of the sewing machine to drive the sewing machine in an applicable manual mode for blocking the setting of the sewing parameter; correcting the sewing failure; and if the correction of the sewing failure is completed, converting the above The mode of the sewing machine drives the above sewing machine in the above automatic mode.

The above-described mode-switchable sewing method may further include the step of selectively changing the sewing parameters after the mode of the sewing machine is switched to drive the sewing machine in the manual mode.

The step of determining whether or not the sewing failure occurs may include determining that a sewing failure has occurred when the length of the sewing thread that is to be sewn according to the number of stitches set on the sewing parameter is shorter than the target length of the sewing thread.

The step of correcting the sewing failure may include: performing an additional sewing process such that the length of the sewing thread reaches the target length; and in the additional sewing process, obtaining the number of stitches measured based on the number of spindle rotations of the sewing machine Correct the information; selectively display the above correction data.

The step of correcting the sewing failure may further include: performing the thread trimming operation if the additional sewing process is completed.

According to the mode-switchable sewing machine of the present invention and the sewing method using the same, if the sewing process is automatically set during the sewing process, the sewing failure occurs due to the difference in the operator's proficiency, the difference in the material properties of the fabric, and the like. The automatic setting of the blocking sewing parameter is applied and can be converted into a manual mode that can easily correct the sewing failure. In addition, in the manual mode in which the sewing failure can be corrected, the correction data regarding the number of stitches used in the correction operation can be obtained, and by displaying the data, the operator can more easily grasp the correction operation and improve the manual mode. Operational proficiency. Therefore, the present invention can reduce the occurrence rate of the sewn product and shorten the sewing process time, thereby saving the production cost of the product and increasing the productivity of the sewing process. Moreover, the quality can be made uniform and the consumer's trust in the product can be improved.

In the present embodiment, a lock stitching machine (Lock Stitch Sewing Machine) which performs linear sewing has been described as an example. However, the present invention is not limited thereto, and is also applicable to a chain sewing machine (Chain Stitch). Sewing Machine) or Embroidering Machine.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Referring to Figures 1 to 3, a mold changeable sewing machine 1000 according to an embodiment of the present invention will be described below. As shown in Fig. 2, the sewing machine receives the sewing material 2 containing the sewing parameter X from the outside and starts sewing. The sewing parameter X is automatically set to the sewing preparation state before the process S. Here, "the sewing machine is set by the sewing parameter X" means that the sewing material including the number of stitches set in the sewing parameter X, the stitch width, the presser foot pressure, the presser foot height, the thread tension, the spindle speed, and the like is input to The sewing machine sets the sewing machine 1000 so that the sewing process S can be executed in accordance with the input parameters. Such a sewing machine 1000 includes a pedal 190 for controlling the start of the sewing process S, an operation panel 200 for receiving input of sewing materials, and a control module 300 for applying the sewing parameter X to the setting of the sewing machine 1000 for The driving of the sewing machine 1000 is controlled; the mode switching switch 400 applies a mode switching signal to the control module 300 so that the sewing machine 1000 is in an automatic mode in which the setting of the sewing parameter X is applied and an applicable manual mode in which the setting of the sewing parameter X is blocked. Drive in any mode.

When the sewing machine 1000 is driven in the automatic mode state, if the previous sewing process S1 is ended, the sewing machine 1000 is automatically set by the sewing parameter X used in the subsequent sewing process S2. For example, if the sewing machine 1000 forms a sewing thread by the number Nn of stitches set for the previous sewing process S1, the number Nn of stitches regarding the subsequent sewing process S2 is automatically set to the sewing machine 1000, and after the subsequent sewing process S2 is started, The sewing machine recalculates the number of stitches for sewing. Conversely, when the sewing machine 1000 is operated in the manual mode, the sewing parameter X is not automatically applied. For example, even if the sewing machine 1000 performs sewing in accordance with the number of stitches Nn set for the previous sewing process S1, the sewing machine 1000 is not automatically set by the number of stitches Nn of the subsequent sewing process S2, and there is no sewing parameter. X is set to the sewing machine 1000, even if it is used to correct the seam The poor sewing of the thread does not affect the number of stitches Nn of the subsequent sewing process S2.

The sewing machine 1000 may include a sewing machine main body 100, a main motor 160 that is indirectly connected to one side of the sewing machine main body 100 or directly by a belt or the like, and a pedal 190 that receives an instruction input of an operator for driving the main motor 160. Further, an on/off power switch 180 is provided on the front side of the table 170 on which the sewing machine main body 100 is mounted, and a mode change switch 400 may be provided on one side of the power switch 180. Further, a control module 300 is provided in a lower space of the table 170, and an operation panel 200 may be provided on the upper surface of the table 170 or on the upper surface of the sewing machine body 100. A rotatable main shaft 110 is provided in the sewing machine main body 100, and one end of the main shaft 110 is connected to the needle stage 130 so as to be movable up and down, and the sewing needle 140 is exchangeably mounted below the needle stage 130. In addition, a height-adjustable and pressure-adjustable presser foot 150 is disposed behind the needle table 130 for functioning as a pressing fabric during the sewing process. Further, a stitch width stepping motor for adjusting the stitch width, a presser foot pressure stepping motor for adjusting the pressure and height of the presser foot 150, and a presser foot height stepping motor are mounted on the sewing machine main body 100, and may be provided with A wire tension detecting device such as a wire tension detecting device or a wire tension electromagnetic device for uniformly maintaining the tension of the thread consumed during sewing. Further, a counter 500 for calculating the number of rotations of the main shaft 110 may be installed at a joint portion of the main shaft 110 and the main motor 160. With such a configuration of the sewing machine 1000, if the main motor 160 is driven in accordance with a user operation command input through the pedal 190 in a state where the power switch 180 is turned on, the spindle 110 and the sewing needle are simultaneously rotated while the spindle 110 is rotated. The 140 moves up and down to perform sewing on the fabric.

Before starting the sewing process S, the sewing machine 1000 is automatically set based on the type of the fabric, the sewing pattern, and the like based on the input various sewing parameters X. For example, various stepping motors provided on the sewing machine 1000 are finely adjusted according to the sewing parameter X. Thus, the sewing machine 1000 is set to perform the sewing process S in an optimum state. In this embodiment, the sewing parameter X is transmitted from the server 10 such as the headquarter of the overall sewing process in the form of the sewing material 2 through a plurality of wireless communication networks.

As shown in FIG. 3, the operation panel 200 may include a transceiver unit 210 for receiving the sewing material 2 transmitted from the server 10 of the headquarters, and transmitting various materials collected during the sewing process S to the server of the headquarters. 10; The display unit 220 is for displaying the driving state of the sewing machine 1000, the input sewing material 2, and the like. Further, the operation panel 200 further includes a button operation unit 230 for changing the content displayed on the display unit 220 or changing the sewing parameter X by manual operation by the operator. The transmission/reception unit 210 includes a cassette (not shown) that can be connected to a device such as a PC or a PDA or a USB memory device, and can also receive input of sewing material by a device such as a PC, a PDA, or a USB. The sewing material 2 input on the operation panel 200 includes the number Nn of stitches constituting one sewing process, and may further include a stitch width, a presser foot pressure, a presser foot height, a thread tension, a spindle speed, and the like.

The sewing material 2 input to the transmission/reception unit 210 is temporarily stored in the storage device provided in the transmission/reception unit 210, and can be transmitted to the control block 300. The control module 300 includes: a main control unit 310, which generates setting and driving command signals of the sewing machine 1000 according to the transmitted sewing material 2; The various drive units of the sewing machine 1000 are controlled by the sewing machine setting and the drive command signal; the power supply unit 340 is connected to the power switch 180, and distributes the power supplied from the outside to the main control unit 310, the motor driver, and the like. The motor driver may include: a main motor driver 320 for driving the control main motor 160; a stepping motor driver 330 for controlling the pin width stepping motor 161, the presser foot height stepping motor 162, the presser foot pressure stepping motor 163, and the like. Various stepper motor drives. A trimming stepper motor 164 for automatic trimming when the sewing process S is completed may also be connected to the stepping motor driver 330. The main control portion 310 can monitor the driving states of the main motor 160 and the various stepping motors (161 to 164) connected to the motor driver, and display them through the display portion 220 of the operation panel 200, whereby the operator can easily determine various kinds of driving. The state of the department.

The main control unit 310 is connected to a pedal 190 that receives an operator command for instructing the start of the sewing process S (including the case where the sewing process S is temporarily restarted), and can uniformly maintain the thread for sewing. The tension line tension maintainer 165 and the mode changeover switch 400 that can operate the sewing machine 1000 in either of the automatic mode and the manual mode by controlling. Further, the main control unit 310 is connected to a counter 500 for counting the number of stitches by the number of rotations of the spindle 110, and includes receiving, from the counter 500, the number of stitches used for sewing performed to correct the sewing failure. The information is used to generate a correction processing unit 510 that corrects the data.

In the sewing process S, sewing failure occurs due to a difference in skill of the operator, a difference in material characteristics of the fabric, etc., and the sewing machine 1000 can be operated in accordance with a user command input through the mode change switch 400. In the active mode. When the operator presses the mode changeover switch 400, a mode switching signal is generated and transmitted to the main control unit 310 of the control module 300, and the main control unit 310 transmits a drive suspension signal to the motor driver based on the mode switching signal.

If the sewing machine 1000 is switched to operate in the manual mode, the setting of the sewing machine 1000 can be maintained by the sewing parameter X of the sewing process S1 in which the sewing failure has occurred, whereby the sewing process S1 in which the sewing failure has occurred can be used. The same sewing parameter X is used to perform the operation of correcting the sewing failure. Further, when the sewing machine 1000 is operated in the manual mode, the operator can change the sewing parameter X to correct the sewing failure.

In the manual mode, if the correction of the sewing failure is completed, the thread trimming operation can be performed, and the sewing machine 1000 can be operated from the state of the manual mode to the state of the automatic mode in accordance with the user command input through the mode changeover switch 400.

Hereinafter, a sewing method (hereinafter, referred to as "a mode-switchable sewing method") using a sewing machine capable of mode conversion as described above will be described with reference to the drawings. In the following description, in the case of the same description as the sewing machine described above, the related content is omitted or simply mentioned.

Referring to FIG. 4, a mode-switchable sewing method according to an embodiment of the present invention may include a step S110 of a sewing machine receiving sewing material including sewing parameters, and a step of receiving a user command for indicating the start or absence of a sewing process by a pedal. S120; a step S130 of starting a sewing process in an automatic mode in which the sewing parameter is applied; a step S140 of confirming whether or not a sewing failure occurs in the sewing process; if not, sewing is not determined Preferably, the step S150 of performing the sewing process in the above automatic mode in accordance with the number of stitches set in the sewing parameter; and the step S160 of performing the automatic trimming operation after performing the sewing process in accordance with the sewing stitch described above. In addition, if it is determined that the sewing is poor, the sewing machine is switched to the manual mode, step S210; the step S240 of receiving the sewing machine drive command of the user by the pedal; the step S250 of performing the correction operation for the sewing failure; and if the sewing is poor, the sewing is performed. In the correction operation, the sewing machine is switched to the automatic mode by the mode switch S270.

In the process of performing the sewing process using the sewing machine in which the sewing parameters are automatically set, the sewing failure due to the operator's proficiency or the difference in the material characteristics of the fabric can be confirmed by the length of the sewing thread. For example, when the length of the sewing thread formed by the sewing process is shorter than the target length of the sewing thread, it can be determined that the sewing is defective.

After the sewing machine is switched to the manual mode because the occurrence of the sewing failure is determined, the method further includes a step S220 of determining whether to change the sewing parameter in order to correct the sewing failure, and a step S230 of setting the sewing machine based on the changed sewing parameter. Normally, the sewing correction operation is performed under the setting of the same sewing parameters as the sewing process in which the sewing failure occurs, but the stitch width, the presser foot pressure, the presser foot height, and the line can be adjusted differently depending on the operator's selection. The tension, the spindle speed, etc. are used to perform the correction operation.

In the step S250 of correcting the sewing failure, the number of stitches used in the correction operation is detected by sensing the number of rotations of the sewing machine spindle, and the correction data regarding the number of measured stitches can be selectively displayed. In other words, the operator confirms that the number of stitches used for sewing is corrected in the correction operation of the sewing failure. In the subsequent sewing process, the operator's proficiency can be improved.

When the correction operation of the sewing failure is completed, the thread trimming operation S260 is executed in order to end the sewing operation, and the sewing machine is switched from the manual mode to the automatic mode S270 in order to repeatedly perform the subsequent sewing operation.

As described above, with the mode-switchable sewing machine of the present invention and the sewing method using the same, even in the case where sewing is poor due to a difference in skill of the operator or a difference in material properties of the fabric, etc., by blocking The automatic application of the input sewing parameters and the selection of the input sewing parameters are selectively applied to smoothly perform the operation of correcting the sewing failure. Therefore, the defect rate of the sewing process can be reduced, the productivity and the quality of the sewn product can be improved, thereby improving the credibility of the product of the consumer.

The invention described above is not limited to the above-described embodiments and the accompanying drawings, and various alterations, modifications and changes can be made without departing from the spirit and scope of the invention. Obvious.

1000‧‧‧Sewing machine

1‧‧‧ fabrics

2‧‧‧Sewing information

10‧‧‧Server delivery

100‧‧‧Sewing machine body

110‧‧‧ Spindle

130‧‧‧ needle table

140‧‧‧Sewing needle

150‧‧‧Foot press

160‧‧‧Main motor

161‧‧‧pin width stepper motor

162‧‧‧Foot height stepper motor

163‧‧‧Foot press pressure stepper motor

164‧‧‧Threading stepper motor

165‧‧‧Wire tension maintainer

170‧‧‧Workbench

180‧‧‧Power switch

190‧‧‧ pedal

200‧‧‧ operation panel

210‧‧‧Receiving Department

220‧‧‧Display Department

230‧‧‧Button Operation Department

300‧‧‧Control Module

310‧‧‧Main Control Department

320‧‧‧Main motor driver

330‧‧‧Stepper motor driver

340‧‧‧Power Supply Department

400‧‧‧ mode switch

500‧‧‧ counter

510‧‧‧Correction Processing Department

FIG. 1 is a view showing a sewing failure occurring in a sewing process.

2 is a front elevational view showing a machine that can be converted in a mode according to an embodiment of the present invention.

3 is a block diagram showing the structure of a mold changeable sewing machine in accordance with one embodiment of the present invention.

4 is a flow chart showing a sewing method of a sewing machine utilizing a mode change according to an embodiment of the present invention.

1000‧‧‧Sewing machine

2‧‧‧Sewing information

10‧‧‧Server

100‧‧‧Sewing machine body

110‧‧‧ Spindle

130‧‧‧ needle table

140‧‧‧Sewing needle

150‧‧‧Foot press

160‧‧‧Main motor

170‧‧‧Workbench

180‧‧‧Power switch

190‧‧‧ pedal

200‧‧‧ operation panel

300‧‧‧Control Module

400‧‧‧ mode switch

500‧‧‧ counter

Claims (9)

A pattern-switchable sewing machine comprising: a pedal for receiving a user command for indicating the start or end of a sewing process; an operation panel for receiving input of sewing data including sewing parameters; and a control module for controlling the driving of the sewing machine according to the sewing parameter And a mode switching switch for generating a mode switching signal for transmitting to the control module such that the sewing machine is in an automatic mode in which the setting of the sewing parameter is applied and a manual mode in which the setting of the sewing parameter is blocked Drive in mode. The mode-switchable sewing machine according to claim 1, wherein the sewing parameter includes at least one of a number of stitches, a stitch width, a presser foot pressure, a presser foot height, a thread tension, and a spindle speed. A machine-switchable sewing machine according to the first aspect of the invention, wherein the sewing machine is provided with a counter for measuring the number of stitches by using the number of rotations of the spindle. The mode-switchable sewing machine according to claim 3, wherein the sewing machine includes a correction processing unit for obtaining the number of stitches measured by the counter in the manual mode as correction data, and selectively displaying The above corrections. A pattern-switchable sewing method using a sewing machine for receiving a user command for instructing the start or end of a sewing process by a pedal, the method comprising the steps of: receiving sewing data for setting a sewing parameter; setting the sewing parameter to be applied In the automatic mode, drive the above Starting the sewing process by the sewing machine; determining whether the sewing failure occurs or not; if the occurrence of the sewing failure is not determined, the sewing process is executed in the automatic mode, and if the occurrence of the sewing failure is determined, the mode of the sewing machine is switched to The sewing machine is driven in an appropriate manual mode for interrupting the setting of the sewing parameters; the sewing failure is corrected; and if the correction of the sewing failure is completed, the mode of the sewing machine is switched to drive the sewing machine in the automatic mode. The mode-switchable sewing method according to claim 5, further comprising the step of selectively changing the sewing parameter after the mode of the sewing machine is switched to drive the sewing machine in the manual mode. The method of sewing according to the fifth or sixth aspect of the invention, wherein the step of determining the occurrence of the sewing failure comprises: performing the length of the sewing thread according to the number of stitches set on the sewing parameter; When it is formed to be shorter than the target length of the sewing thread, it is determined that sewing failure has occurred. The method according to claim 7, wherein the step of correcting the sewing failure comprises: performing an additional sewing process to make the length of the sewing thread reach the target length; in the additional sewing process, Obtaining correction data on the number of stitches measured based on the number of spindle rotations of the above sewing machine; The above correction data is selectively displayed. The mode-switchable sewing method according to claim 8, wherein the step of correcting the sewing failure further comprises: performing the thread trimming operation if the additional sewing process is completed.