CN112064210A - Method for quickly adjusting parameters of thread trimming stub of sewing machine - Google Patents
Method for quickly adjusting parameters of thread trimming stub of sewing machine Download PDFInfo
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- CN112064210A CN112064210A CN201910502253.1A CN201910502253A CN112064210A CN 112064210 A CN112064210 A CN 112064210A CN 201910502253 A CN201910502253 A CN 201910502253A CN 112064210 A CN112064210 A CN 112064210A
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- trimming
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- sewing
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B19/00—Programme-controlled sewing machines
- D05B19/02—Sewing machines having electronic memory or microprocessor control unit
- D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
Abstract
The invention provides a method for quickly adjusting parameters of a trimming stub of a sewing machine, which comprises the following steps: the method comprises the following steps that a plurality of sewing modes and a plurality of groups of parameter sets which correspond to the sewing modes one by one are preset in an electric control module of the sewing machine, and each group of parameter sets is matched with a thread cutting mode of a short thread head and comprises a plurality of thread cutting parameters; before sewing is started, a user selects one sewing mode of a plurality of sewing modes, the electric control module automatically acquires each trimming parameter in a group of parameter groups corresponding to the sewing mode selected by the user during subsequent sewing, and the electric control module controls the cutting time of a trimming mechanism in the sewing machine to execute trimming actions according to each trimming parameter in the group of parameter groups. According to the method and the device, the sewing mode is associated with the parameter group corresponding to the sewing mode, and the electronic control module can automatically acquire the parameter group corresponding to the sewing mode after the user selects the sewing mode, so that the operation difficulty of adjusting the thread cutting parameters by the user is greatly reduced.
Description
Technical Field
The invention relates to the field of sewing machines, in particular to a method for quickly adjusting parameters of a thread trimming stub of a sewing machine.
Background
The overedger needs to trim a front wire braid formed at the front edge of the sewing material during starting sewing and needs to trim a rear wire braid formed at the rear edge of the sewing material after sewing is finished, and some sewing processes provide the requirement of short wire ends on wire cutting so as to improve the sewing quality and efficiency. Based on this, the chinese patent application No. 201810602769.9 discloses a trimming control method for a sewing machine of an overlock sewing machine, which has a plurality of trimming modes, wherein the stub trimming mode and the stub trimming compensation mode in the plurality of trimming modes can both achieve the trimming effect of the stub and are both the trimming modes of the stub; under the short thread end trimming mode, the electric control module controls the cutting time according to the signal of the detection sensor; under the compensation mode of the short thread end trimming, the electric control module compensates and calculates the actual trimming time of the short thread end, so that the trimming effect of the short thread end is stably realized.
However, the overedger electronic control module involves more trimming parameters, so that the trimming parameters are relatively complicated to adjust, and the effect of short trimming thread head is achieved by adjusting a plurality of trimming parameters. In addition, after the cloth is replaced, the responsive trimming parameters need to be adjusted, otherwise, the overedger cannot achieve the optimal trimming effect of the short thread end, and the trimming parameter adjusting process with more complex operation inevitably increases the operation difficulty of a user.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a method for quickly adjusting the trimming head parameters of a sewing machine, which reduces the operation difficulty of adjusting the trimming parameters for a user.
In order to achieve the aim, the invention provides a method for quickly adjusting parameters of a thread trimming stub of a sewing machine, which comprises the following steps:
s1, presetting a plurality of sewing modes and a plurality of groups of parameter groups corresponding to the sewing modes one by one in an electric control module of the sewing machine, wherein each group of parameter groups is matched with the thread cutting mode of the short thread end and comprises a plurality of thread cutting parameters;
and S2, before starting sewing, the user selects one of the multiple sewing modes, the electric control module automatically acquires each cutting parameter in a group of parameter groups corresponding to the sewing mode selected by the user during subsequent sewing, and the electric control module controls the cutting time of the cutting mechanism in the sewing machine to execute the cutting action according to each cutting parameter in the group of parameter groups.
Furthermore, the sewing machine is provided with an operation panel connected with the electric control module, and a mode selection key and a display screen are arranged on the operation panel; in step S2, the user enters a mode selection by pressing the mode selection button, and selects one of the plurality of sewing modes by combining the display interface of the display screen and the mode selection button.
Further, in step S1, the manner in which the trimming parameters in each group of parameter sets are preset in the electronic control module is as follows: the trimming parameters are stored in the electric control module in advance; in step S2, the manner of acquiring the trimming parameter by the electronic control module is as follows: the trimming parameters are read directly.
Further, in step S1, the manner in which the trimming parameters in each group of parameter sets are preset in the electronic control module is as follows: the calculation formula of the trimming parameters is pre-stored in the electric control module; in step S2, the manner of acquiring the trimming parameter by the electronic control module is as follows: and directly reading the calculation formula of the trimming parameters and automatically calculating the trimming parameters.
Further, the sewing machine is provided with an operation panel connected with the electronic control module; in step S1, the manner in which the trimming parameters in each set of parameter sets are preset in the electronic control module is as follows: the trimming parameters are set by a user through an operation panel; in step S2, the manner of acquiring the trimming parameter by the electronic control module is as follows: the trimming parameters are read directly.
As mentioned above, the method for quickly adjusting the parameters of the thread trimming stub of the sewing machine has the following beneficial effects:
according to the method and the device, the sewing mode and the parameter set corresponding to the sewing mode are associated, the user can automatically acquire the parameter set corresponding to the sewing mode after selecting the sewing mode, the thread trimming effect of the short thread end is achieved, the user is prevented from adjusting a plurality of thread trimming parameters according to sewing characteristics such as cloth, and the operation difficulty of adjusting the thread trimming parameters by the user is greatly reduced.
Drawings
Fig. 1 is a schematic view of a sewing machine according to the present application.
Description of the element reference numerals
1 case
2-stitch sewing machine
3 electric control module
4 operating panel
5 transmitter assembly
6 trimming assembly
7 first inductor
8 second inductor
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The invention provides a method for quickly adjusting parameters of a trimming stub of a sewing machine, which is used for the sewing machine, and the sewing machine is preferably an overlock machine. As shown in fig. 1, the sewing machine includes a machine case 1, a sewing table 2, an electronic control module 3 installed on a right end face of the machine case 1, an operation panel 4 installed on a rear surface of the machine case 1 and adjacent to the electronic control module 3, a transmitter assembly 5 installed at a left end of the machine case 1, a thread cutting assembly 6 for performing thread cutting, a first inductor 7 and a second inductor 8 for front thread cutting control, and a third inductor for rear thread cutting control, wherein the operation panel 4, the transmitter assembly 5, a thread cutting driving source of the thread cutting assembly 6, the first inductor 7, the second inductor 8, and the third inductor are all connected with the electronic control module 3. The first inductor 7, the second inductor 8, the third inductor and the trimming assembly 6 are sequentially arranged from back to front along the forward moving direction of a sewing material when the sewing machine sews, the sewing material sequentially passes through the first inductor 7, the second inductor 8 and the third inductor, the first inductor 7 is installed on the sewing table 2, the second inductor 8 is installed on the sewing table 2 or a needle plate of the sewing machine and is located on the front side of a cutting edge in the trimming assembly 6, the distance L between the second inductor 8 and the cutting edge in the trimming assembly 6 in the front-back direction is 15-30mm, preferably 18-21mm, the third inductor is installed at the trimming assembly 6 and is not seen in figure 1, and the third inductor is located on the front side of the cutting edge in the trimming assembly 6 in the front-back direction and is located a certain distance L1 in advance of the cutting edge. The electronic control module 3 controls the first inductor 7, the second inductor 8 and the third inductor to be switched on or off by controlling the switches of the emitters in the emitter assembly 5; of course, in other embodiments, the electronic control module 3 may directly control the on or off of the first sensor 7, the second sensor 8 and the third sensor. In addition, aiming at the front thread trimming mode of trimming the front thread braid during the seam starting, the front thread trimming device has a stub thread trimming mode and a stub thread trimming compensation mode, and the two modes can realize the thread trimming effect of the stub thread and are both the thread trimming modes of the stub thread.
Further, in the short thread end trimming mode, the first sensor 7 is turned off, the second sensor 8 is turned on, and at this time, the trimming time compensation function is not turned on, and the trimming time is not compensated and calculated. In the short thread end trimming compensation mode, the first sensor 7 is started, the second sensor 8 is started, and at the moment, the trimming time compensation function is started, and the trimming time needs to be compensated and calculated; regarding the front trimming control mode in the stub trimming mode and the front trimming control mode in the stub trimming compensation mode as the prior art, the chinese patent application with application number 201810602769.9 discloses a trimming control method for a sewing machine of an overlock machine, and therefore, the description thereof is omitted here. Or, in the short thread end trimming compensation mode, only one of the first sensor 7 and the second sensor 8 is turned on, and at this time, the actual trimming time T is automatically calculated by the electronic control module 3 in the following calculation mode: t ═ L/(P × N) -Tc; when the first inductor 7 is started, L is the distance between the first inductor 7 and the cutting edge in the thread trimming assembly 6, P is the current needle pitch of the sewing machine, N is the current rotating speed of a main motor of the sewing machine when a sewing material passes through the first inductor 7, and Tc is the response time of the first inductor 7; when the second inductor 8 is opened, L is the distance between the second inductor 8 and the cutting edge in the thread trimming assembly 6, P is the current needle pitch of the sewing machine, N is the current rotating speed of the main motor of the sewing machine when the sewing material passes through the second inductor 8, and Tc is the response time of the second inductor 8.
Aiming at two trimming modes of the short thread head trimming mode and the short thread head trimming compensation mode, the trimming mode of the short thread head after front trimming can be realized, the trimming mode has a plurality of trimming parameters, and the trimming parameters are used for controlling the lower cutting time of the trimming component 6, namely the front trimming time, by the electric control module 3. The plurality of trimming parameters comprise a stitch length parameter, a compensation function switch parameter, a second inductor switch parameter, a limiting speed parameter and the like; wherein, the needle pitch parameter is the needle pitch of the sewing machine, and the parameter value is expressed by P; the compensation function switch parameter indicates whether to perform compensation calculation on the trimming time. And the trimming parameters for realizing the stub during the post trimming control comprise the switch parameters of the third sensor, the number of delay pins and the like.
Further, for different sewing characteristics, for example, for different sewing materials, the cutting parameters for front and rear cutting time control are different, so that the cutting parameters need to be adjusted. Based on this, the application provides a method for quickly adjusting parameters of a thread trimming stub of a sewing machine, which comprises the following steps:
s1, presetting a plurality of sewing modes and a plurality of groups of parameter groups corresponding to the sewing modes one by one in an electric control module 3 of the sewing machine, wherein each group of parameter groups is matched with the thread trimming mode of the thread trimming head to realize the thread trimming head after the thread trimming component 6 trims the thread, and each group of parameter groups comprises a plurality of thread trimming parameters;
s2, before starting sewing, the user selects one of the plurality of sewing modes, then the electronic control module 3 automatically obtains each cutting parameter in a group of parameter groups corresponding to the sewing mode selected by the user during subsequent sewing, and the electronic control module 3 controls the cutting time of the cutting mechanism in the sewing machine to perform the cutting action according to each cutting parameter in the group of parameter groups.
In this application, with sewing mode and the corresponding parameter group of this sewing mode relevant, user selects behind the sewing mode automatically controlled module 3 can acquire the parameter group corresponding to this sewing mode, can both realize the trimming effect of stub behind preceding trimming and the back trimming, the trimming parameter of preceding trimming and the trimming parameter synchronous switch of back trimming match, and avoid the user to adjust a plurality of trimming parameters according to sewing characteristics such as cloth, greatly reduced user adjusts the operation degree of difficulty of trimming parameter, simplify the accommodation process of trimming parameter, realize the quick adjustment of trimming parameter, reduce the regulation operation degree of difficulty of automatically controlled module 3.
Furthermore, the operation panel 4 is provided with a mode selection key and a display screen; in step S2, the user enters a mode selection by pressing the mode selection button for a short time, and selects one of the plurality of sewing modes by combining the display interface of the display screen and the mode selection button. In the present embodiment, the sewing modes for the user to select include, but are not limited to, a knitting mode, a weaving mode, and a large gauge mode, and each sewing mode is provided with a parameter set matching the stub trimming mode and the stub trimming compensation mode.
Further, in the step S1, the trimming parameters in each set of parameter sets are preset in the electronic control module 3 in the following ways:
in the first mode, trimming parameters are stored in the electric control module 3 in advance; at this time, in step S2, the manner of acquiring the trimming parameters by the electronic control module 3 is as follows: the trimming parameters are read directly.
In the second mode, a calculation formula of the trimming parameters is stored in the electric control module 3 in advance; at this time, in step S2, the manner of acquiring the trimming parameters by the electronic control module 3 is as follows: and directly reading the calculation formula of the trimming parameters and automatically calculating the trimming parameters.
The third mode is that the trimming parameters are set by the user through the operation panel 4; at this time, in step S2, the manner of acquiring the trimming parameters by the electronic control module 3 is as follows: the trimming parameters are read directly. In addition, the trimming parameters set by the user via the operation panel 4 are automatically saved by the electronic control module 3 and the previously set values in the sewing mode are covered.
The following description will be made by taking a knitting pattern as an example.
1. When the yarn is cut in the front direction in the knitting mode, the compensation function switch parameter U1 is equal to 1, the yarn cutting time is compensated and calculated when the yarn is cut in the front direction, the second sensor switch parameter U2 is equal to 1, the second sensor 8 is turned on, and the compensation function switch parameter U1 and the second sensor switch parameter U2 are both stored in the electronic control module 3 in advance.
2. In the sewing process of the knitting sewing material, due to the elastic influence of the knitting fabric, the stitch length actually sewn on the knitting sewing material has a certain loss, so the stitch length parameter U3 is set by a user on site through the operation panel 4 according to the specific knitting sewing material, the parameter value P of the stitch length parameter U3 needs to be smaller than the theoretical stitch length, and the parameter value P of the set stitch length parameter U3 is automatically stored in the electronic control module 3.
3. When the second sensor 8 is turned on, the speed limit parameter U4 is agreed with the following calculation formula (the parameter value of the speed limit parameter U4 is denoted by N) based on the distance L from the second sensor 8 to the cutting edge of the trimming assembly 6 and the needle pitch parameter U3 set in the field: l is N P T-T1, the distance L between the second sensor 8 and the cutting edge in the trimming assembly 6 is stored in the electric control module 3 in advance, T1 is the delay time of the second sensor 8 and is stored in the electric control module 3 in advance, T is how long the electric control module 3 needs to delay and then power on the trimming drive source and is also stored in the electric control module 3 in advance (T is more than or equal to 0), and the electric control module 3 automatically calculates the size of the parameter value N of the speed limiting parameter U4 through the calculation formula L is N P T-T1, namely the current sewing speed of the sewing machine cannot exceed the parameter value N of the speed limiting parameter U4.
4. When the knitting mode is in back trimming, the third sensor switch parameter U5 is 1, which indicates that the third sensor is turned on, and the delay needle number U6 is stipulated by the following calculation formula (the parameter value of the delay needle number U6 is denoted by M): and M is not more than L1/P + N T1, and L1 is the distance between the third sensor and the cutting edge in the trimming assembly 6 and is stored in the electronic control module 3 in advance.
Based on the knitting mode, a plurality of trimming parameters corresponding to the knitting mode are preset in the electronic control module 3: the compensation function switch parameter U1 is 1, the second sensor switch parameter U2 is 1, the needle distance parameter U3 which needs to be set on site, the calculation formula L N P T1 stipulates the speed limiting parameter U4, the third sensor switch parameter U5 is 1, and the calculation formula M is less than or equal to L1/P + N T1 stipulates the delay needle number U6. Before the sewing is started, after the user selects the knitting mode, the user needs to set a needle pitch parameter U3, and the electronic control module 3 can automatically acquire a compensation function switch parameter U1, a second sensor switch parameter U2, a needle pitch parameter U3, a speed limiting parameter U4, a third sensor switch parameter U5 and a delay needle number U6 during subsequent sewing, so that the front trimming time and the rear trimming time are automatically controlled, and the trimming effect of the short thread ends of the front trimming and the rear trimming is realized.
In conclusion, the present application sets multiple sewing modes matching with the short thread end trimming, and the related trimming parameters of the internal front and rear trimming are in one-to-one correspondence and mutual association with the sewing modes, the sewing modes are associated with the fabric sewn by the actual user, the user only needs to briefly press the mode selection button on the operation panel 4 to select the sewing mode when adjusting the trimming parameters, and then the electronic control module 3 can automatically acquire the related trimming parameters matching with the front and rear trimming short thread ends of the sewing mode, thereby greatly simplifying the process of adjusting the sewing parameters by the user.
Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. A method for quickly adjusting parameters of a thread trimming stub of a sewing machine is characterized by comprising the following steps: the method comprises the following steps:
s1, presetting a plurality of sewing modes and a plurality of groups of parameter groups corresponding to the sewing modes one by one in an electric control module of the sewing machine, wherein each group of parameter groups is matched with the thread cutting mode of the short thread end and comprises a plurality of thread cutting parameters;
and S2, before starting sewing, the user selects one of the multiple sewing modes, the electric control module automatically acquires each cutting parameter in a group of parameter groups corresponding to the sewing mode selected by the user during subsequent sewing, and the electric control module controls the cutting time of the cutting mechanism in the sewing machine to execute the cutting action according to each cutting parameter in the group of parameter groups.
2. The method for rapidly adjusting the trimming stub parameter of a sewing machine according to claim 1, wherein: the sewing machine is provided with an operation panel connected with the electric control module, and the operation panel is provided with a mode selection key and a display screen;
in step S2, the user enters a mode selection by pressing the mode selection button, and selects one of the plurality of sewing modes by combining the display interface of the display screen and the mode selection button.
3. The method for rapidly adjusting the trimming stub parameter of a sewing machine according to claim 1, wherein: in step S1, the manner in which the trimming parameters in each set of parameter sets are preset in the electronic control module is as follows: the trimming parameters are stored in the electric control module in advance; in step S2, the manner of acquiring the trimming parameter by the electronic control module is as follows: the trimming parameters are read directly.
4. The method for rapidly adjusting the trimming stub parameter of a sewing machine according to claim 1, wherein: in step S1, the manner in which the trimming parameters in each set of parameter sets are preset in the electronic control module is as follows: the calculation formula of the trimming parameters is pre-stored in the electric control module; in step S2, the manner of acquiring the trimming parameter by the electronic control module is as follows: and directly reading the calculation formula of the trimming parameters and automatically calculating the trimming parameters.
5. The method for rapidly adjusting the trimming stub parameter of a sewing machine according to claim 1, wherein: the sewing machine is provided with an operation panel connected with the electric control module; in step S1, the manner in which the trimming parameters in each set of parameter sets are preset in the electronic control module is as follows: the trimming parameters are set by a user through an operation panel; in step S2, the manner of acquiring the trimming parameter by the electronic control module is as follows: the trimming parameters are read directly.
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