TWI240025B - Sewing machine with a segment sewing device - Google Patents

Abstract

According to the present invention, sewing of a plurality of segments can be realized during sewing of the clothes, particularly sewing of a plurality of segments with corresponding seams can be realized without the need of mounting a tedious cloth thickness detection device near the presser foot. Instead, a simple multi-stage sewing switch is used in completing the corresponding multi-staged sewing. In a sewing machine set with suitable tension of a sewing thread, cloth feeding setting, and pressure of the presser foot according to the present invention, a multi-stage sewing switch is mounted on the operation panel of the sewing machine. The switch can set suitable tension of a sewing thread, cloth feeding setting and pressure of the presser foot for a continuous multi-staged sewing operation on the sewing machine.

Description

1240025 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a sewing machine with a multi-section sewing device, which is used for sewing clothes. For multi-stage sewing, the complicated cloth thickness detection device is not installed near the foot pressing device. Instead, a simple multi-stage sewing switch is used to respond to the multi-stage partial sewing. [Prior art] In the prior art, there have been patents relating to automatic detection of the thickness of the fabric, the amount of stitches fed, or changing the amount of fabric pushed in response to the thickness of the fabric, especially a device for detecting the thickness of the fabric Several pieces exist. For example, "Patent Document 1" Japanese Patent Laid-Open No. 5- 1 6 1 7 7.1, "Patent Document 2" Japanese Patent Laid-Open No. 5-2 4 5 2 8 3, and "Patent Document 3" Japanese Patent Laid-Open No. 1 0-2 3 No. 5 0 5 8 and "Patent Document 4" JP-A No. 10-2 3 5 0 5 9. [Summary of the Invention] In the above-mentioned Patent Document 1, when the foot presses across the edge or multiple sections of the cloth, the cloth thickness detection device detects the change in cloth thickness to reduce the pressure under the foot and increase the push. The amount is used as a control device. In Patent Document 2, in response to a change in the thickness of the cloth detected by the cloth thickness detecting device, the upper thread supply amount control device controls the upper thread supply amount. In Patent Document 3, at the front and rear portions of the seam portion, the cloth thickness detection position and the lower needle position can set an appropriate amount of loop line at the current lower needle position even if the cloth thickness is greatly different. In Patent Document 4, the position of the tongue is not affected.

Page 5 1240025 Detecting the thickness of the thick cloth. Gao Ming said that Mi entered the Guangke five and the thick section of the material on the cloth where the joints are connected to the car-related department. Commonly used in the industry, the seam refers to the success of the car and the flat section of the car department. The case is made, and the case is not as good as it is. It is also expected that the cloth technique is advanced and advanced. Change the cause of this. Seams that are produced by the seam but have not changed the quality of the sewn car are of good quality.

J is only stitching Ma, and the section is installed on the material of the thick cloth that is discharged and the thickness of the cloth is unknown. It is the first time, and the seasonal sewing car is used as the section. The cloth is practically free from evasion. The hair quality of the student is due to sewing. Cars are the same, will they be the same? The continuation of the connected parts is changed to continue the sewing and the car should be connected to the paragraph. There is no other cc section as a female. / (\ The title is often asked and the thickness is thick.) The cloth should be opposite to the section. As mentioned above, the open seams of the sub-decisions are all connected, and the through seams used in the stripe seams depend on the car. The upper part of the joint should be multi-seamed but the connection can be continued. Lianliang stitches the part that can be turned on and off. Place the front part seam of the thick cloth in the section of the installation section and check the thick cloth first. -43 If you want to use it, the part of the instantaneous opening on the cross section is often shifted. £} The inspection method is not as good as the inspection method. The C of the inspection method is appropriate to change the variation β. It is a thick cloth that is placed on the oblique oblique energy department. The cross force is increased. On the rN rate tongue oblique foot C bet 0 and when the force is inclined to send the tilting part, the material will be pushed across the cloth and the time will be pushed to the center. The body having a charge of tipping. In pressure across the force of the tongue against the foot portion divided charge a small slit can have more contact sections to be reduced too will charge, charge difference across the small segment so that a large tongue foot

Page 6 1240025 V. Description of the invention (3) Therefore, even if there is an effective cloth thickness detection device, the pressing of the ankles cannot smoothly cross the multi-segment joints, which is a major disadvantage. Moreover, it is disadvantageous to install a complicated cloth thickness detection device around the periphery of the ankle, which will increase the price of the sewing machine. Therefore, the sewing machine with simple operation and cheap multi-segment sewing function is expected by the public. [Invention] Provided for a time, the pressure panel is set in a plurality of sections of pressure sewing seam. It is usually sewn and sewn on the appropriate section of the sewing machine. Contents] Result 'Design usually multi-segment multi-segment sewing machine with more suitable sewing and foot-stitching sewing machine operation which is more suitable and easy to press the tongue. In order to solve the shortcomings mentioned above, a convenient multi-stage invention is a sewing machine with a multi-stage sewing device that has been continuously researched. It is a sewing machine with a proper sewing thread tension, cloth pushing amount, and any value. There is a multi-stage sewing switch configured, and according to the operation of the switch, the tension of the seam of the sewing machine, the amount of pushing of the fabric, the multi-stage sewing mode of any value, and because of the off, it can be adapted to The present invention relates to a sewing machine having a multi-stage sewing device. The sewing machine is provided with an appropriate number of sewing thread tension and cloth tongue pressure. Sewing switch, and the number of revolutions can be limited according to the driving sewing part, and the speed of the middle to low speed set in the multi-section car continuously changes, and the switch can be adapted Multi-bet all segments, providing

Page 7 1240025 V. Description of the invention (4) The present invention also provides a sewing machine with a multi-stage sewing device, which is set at the time of normal sewing with appropriate sewing thread tension, cloth pushing amount, and foot pressure. A sewing machine of any value is provided with a multi-section sewing switch arranged on the operation panel of the sewing machine, and according to the operation of the switch, it can be changed more continuously. It is suitable for multi-section sewing with sewing thread tension, fabric pushing amount, Among the pressure of the tongue and the number of revolutions in the multi-segment sewing, the multi-segment sewing mode of any value. The simple multi-segment sewing switch can be adapted to the multi-segment pressure of the multi-segment and provides good multi-segment sewing. Due to the above-mentioned continuous changes, the present invention is suitable for preset memory of conditions such as the stitch tension of multi-stage sewing, the amount of cloth pushed, the pressure of the ankle, and the number of revolutions during multi-stage sewing. ≫ The same multi-stage sewing repeats During the process, due to the memorized values, appropriate multi-section sewing can be repeated. Accordingly, the shortcomings of the above problems are solved. 'This is the first example of the implementation of Figure IX in Figure 11. This illustration of the surface is based on a formula, and the actual block is shown below.

ο IX The initial stitching of the machine is counted as il. There is a device installed in the center. It will sew Jul with the same force, and it will be placed in the control and self-propelled machine to send and push the material. The pressure of the foot of the pressure sewing tongue is appropriate, and the set of the sewing sewing car is adjusted to send the set foot f. C The pressure of the pressure pressing tongue is turned to Je \. The self-loading-mouth Φ— drawing machine sewing seam tfrtl Is-1 edge cloth type can often go through, but the installation shows that the machine sewing seam suitable for the center position is suitable ο 缝 1 on the crystal Cloth material

Page 8 1240025 V. Description of the invention (5) Day surface 8 0), the display device 8 and the touch panel constitute a display operation section, and display various elements related to sewing eyes (type of sewing eyes, tension of sewing threads) , The amount of cloth pushed, the differential ratio, the type of thread, the type of cloth, etc.). You can also select and input sewing elements from the touch panel. Specifically, the cloth thickness selection device 3 or the stitch number setting device 4 may be set or selected by the touch panel. As shown in FIG. 4, the liquid crystal day surface 80 of the display device 8 displays various seam eye selection day surfaces 8 1 of the various sewing eyes. In the option screen of the seam eye selection day surface 8 1, Display "alignment system 4" 8 1 a, "cloth side system 3" 81b, "flat car side 3" 81c edge "81e," rolling car side 2 side 8 1 "touch" alignment system 4 _ ", "Alignment system 4 _" will be displayed, as shown in Figure 5, which will display the "Manual" key 8 2 b "Roll-up car side 3" 81d, and "cover car" 8 1 f. For example, after selecting the day 8 1 a (touch panel) from the sewing eye, the sewing screen 82 is 81 a as shown in FIG. 5. _ Positioning system 4 "8 1 a Sewing day 8 2 returns to the sewing eye selection screen 8 1" Option "82a and so on. On the other hand, as shown in FIGS. 1 and 4, when the sewing eye selection day surface 8 1 is selected by the sewing eye selection device 1, the data suitable for the selected sewing eye is selected by the CPU 1 0. The pulse motor driving circuit 2 1 for adjusting the tension of the sewing thread is transmitted to the pulse driving motor 2 5 for adjusting the tension of the sewing thread, and the sewing thread tension is set only by driving a predetermined rotation angle. Similarly, the CPU also transmits the data suitable for the selected sewing eye to the main fabric feed volume adjustment pulse motor drive circuit 2 2 and the differential ratio adjustment pulse motor drive circuit 2 3, so the main fabric feed volume adjustment pulse The motor 2 6 pulse motor for differential ratio adjustment 2 7 only drives a predetermined rotation angle, and sets the main cloth feed amount and the differential ratio. Similarly, CPU10 will also apply to standard

Page 9 1240025 V. Description of the invention (6) The data of quasi-cloth thickness is transmitted to the pulse motor driving circuit 2 4 for adjusting the pressure of the tongue, so the pulse motor 2 8 for adjusting the pressure of the tongue will only drive a predetermined rotation angle. Set the tongue pressure. C P U transmits the data suitable for the selected sewing eye to the sewing motor drive circuit 29, so the sewing drive motor 30 will drive the sewing revolution number according to the predetermined rotation number. The CPU 10 calculates and controls the data transmitted from the rotation number detection device 6 (specifically, the speed sensor provided on the main shaft of the sewing machine or the sewing drive motor), and then transmits the data to the sewing motor drive circuit 2 9 to control the car. Number of sewing revolutions. Among the above-mentioned various elements, in the preparation stage before the start of sewing or multi-segment sewing, there are automatic and manual configurations in the touch panel of the display device 8 described above. For the items of sewing thread tension, main fabric feeding amount, differential ratio, and pressing pressure of the tongue, automatic / manual selection device 11 for sewing thread tension, automatic / manual selection device 12 for main fabric feeding amount, differential Than the automatic / manual selection device 13 and the automatic / manual selection device 14 for pressing the tongue, which is connected to the above-mentioned CPU 10, during the preparation phase, choose one of automatic and manual in the basic settings or the memorized settings, or The appropriate setting is automatic or manual at the initial stage. Specifically, when the "manual" key 8 2 b (touch panel) for selecting the sewing day surface 82 shown in FIG. 5 is touched, the manual setting day surface 83 of FIG. 6 is constituted. The manual setting daytime surface is provided with a "normal sewing" key 83a, a "sewing thread tension" key 83b of the manual selection device, a "fabric pushing amount" key 83c of the manual selection device, and a "foot pressure" of the device manually selected ”Key 83d, manually select the“ multi-segment sewing ”key 8 3e of the device, manually select the device ’s

Page 10 1240025 V. Description of the invention (7) The "number of stitches" key 83f, the "step difference cloth thickness" key 83g of the manual selection device, the "number of revolution" key 8 3h of the manual selection device, and other keys. Select the appropriate manual selection device as described above, enter the manual setting of the daytime surface in Figure 6, and select the ^ "normal sewing" key 8 3a to switch the automatic value or the manual value set by the user according to each element. For example, after manually selecting the "sewing thread tension" key 8 3 b in Fig. 6 for setting the day surface 8 3, enter the sewing surface tension setting day surface 8 4 in Fig. 7 to correspond to | each sewing thread. The condition shows 8 4 a "+ —" key 8 4 b to manually set the sewing thread tension. 8 4 c is the scale for setting the sewing thread tension. In a small sewing machine with the above-mentioned requirements, a multi-section sewing switch 2 a which can be used as a multi-section sewing selection device is arranged at a position easy to operate in front of the sewing machine shown in FIG. 3. When β is selected with this multi-section sewing selection device, multi-section sewing is selected, and the initial sewing machine is set to the multi-section sewing mode. The multi-stage sewing mode is shown in the following status. The "multi-segment mode" is: 1. Corresponding to the thickness of the multi-segment section, the stitch tension value will change continuously and appropriately. It also corresponds to the magnitude of the straddle inclination 0 (specifically, the step difference of the multi-segment portion). 2. Corresponding to the thickness of the multi-segment part, the amount of cloth push will change continuously and appropriately (including the difference ratio between the increase and decrease due to the different types of cloth). It also corresponds to the magnitude of the inclination 0 (specifically, the step difference of the multi-stage section). 3. Corresponding to the thickness of the multi-segmented part, the pressure of the ankle tongue will increase and decrease appropriately and continuously. It also corresponds to the magnitude of the cross-pitch inclination 0 (specifically, the step difference of the multi-segment portion).

Page 11 1240025 V. Description of the invention (8) 4. Corresponding to the thickness of the multi-segment part, the rotation value will change continuously and appropriately. It also corresponds to the magnitude of the cross-pitch inclination 6> (specifically, the step difference of the multi-segment portion). At least one of the above 1 to 4 states. Regarding the thickness of the multi-stage section (cloth thickness and step difference), select the "manual" key 82b in Fig. 5 to enter the manual setting day surface 83 in Fig. 6, select the "multi-stage sewing" key 8 3e, and select the step difference (cloth (Thickness and step difference) key 8 3g, enter the step difference setting daytime surface 85 in Fig. 8. In the step surface setting day 5 and 5, the level of several stages prepared in advance is displayed, from which the selected step level is selected. Corresponding to the level, the standard sewing thread tension, the amount of cloth pushed, the pressure of the tongue, and the maximum number of revolutions will be adjusted. set up. This is an automatic multi-step sewing. The "an example of the difference in level difference" is that (a) the step difference is small, the step difference is large, (b) the step difference is 1, the step difference is 2, the step difference is 3, and the step difference is 4 or more. Multi-section sewing with manual values according to the operator's preference is selected. According to the manual value of the multi-section sewing, the operator performs multi-section test sewing with the actual fabric, and selects the "manual" key 8 2 b in Fig. 5 to input the appropriate sewing thread tension, fabric pushing amount, Press the tongue pressure and the number of rotations. When the multi-section sewing of the actual sewing object is performed, the multi-stage sewing selection device 2 is selected to replace the manual value of each sewing element with the memory. This is a manual multi-step sewing. To set the multi-step sewing according to the manual value, select the "manual" key 82b in Fig. 5 to enter the manual setting day surface 83 in Fig. 6 and select

1240025 V. Description of the invention (9) After the "multi-segment sewing" key 8 3e, set each sewing element to a preferred number-value. Here, the "step difference (cloth thickness)" key 8 3g is not selected. Because this "step difference (cloth thickness)" key 8 3g is selected, it will be changed to the setting of automatic value selection ~. Whether it is automatic sewing or manual setting sewing, the increase and decrease of the various elements of the sewing thread tension, the amount of fabric pushed, the pressing force of the tongue, and the return speed are not changed from ordinary sewing to multi-section sewing. It's a gradual slope change. In other words, when a multi-segment sewing section is pushed from the normal sewing section, the 'gradually changes depending on the step difference being 2 or several steps. When returning from the multi-section sewing section to the normal sewing section, the opposite slope change is also taken. After pressing the multi-segment sewing switch 2a, the actual number of stitches at the beginning of the "multi-segment sewing mode" is reached. When the front end of the foot press reaches the multi-segment section, press the β multi-segment sewing switch 2a, and the multi-segment section reaches the needle. The number of stitches up to the position is an input reference value. The same is true for the end of a multi-segment seam. On the other hand, similarly, if you enter the number of stitches in the "multi-step sewing mode" with the "number of stitches" key 8 3 f in advance, the "multi-step sewing mode" will be automatically canceled. At this time, it is not necessary to press the multi-stage sewing switch again at the end of the multi-stage sewing. When the number of stitches of the multi-step sewing is not set, after the multi-step stitch switch 2 a of the multi-step sewing selection device 2 is pressed, the "stitch number" key 8 3 f of the day surface 8 3 is manually input by FIG. 6 and entered. The number of stitches is changed to "Multi-section sewing mode" based on the number of stitches. After that, sewing is performed in the "multi-stage sewing mode". At the end of the multi-segment sewing, after pressing the multi-segment sewing switch 2 a again, the multi-segment sewing pattern is performed based on the number of stitches entered by the stitch number key 8 3 f.

Page 13 1240025 V. Description of the invention (π) Next, set the conditions for multi-segment sewing (refer to S 2). In the case of multi-stage sewing, it is necessary to set a few stitches until the multi-stage sewing position is reached. The multi-stage sewing requires several stitches. You can choose to set or not. After the multi-stage sewing conditions are set, sewing is started (refer to S 3). In the stage of sewing, it is judged whether to select the multi-stage sewing (refer to S 4), and when the multi-stage sewing of the multi-stage sewing selection device 2 is pressed for 2 a, it is regarded as "multi-stage sewing mode" (refer to S 5) . Next, it is judged whether the number of stitches of the multi-step sewing is set (refer to S 6). Continue sewing (refer to S 7). If the number of stitches is set, determine whether the number of stitches has reached the set number of stitches (refer to S 8). When the set number of stitches is reached (YES), each item of sewing thread tension, cloth pushing amount, differential ratio, pressure on the tongue, and number of revolutions will be switched to the setting at the preparation stage or the basic "multi-stage sewing mode" Drives a pulse motor (refer to S 9). Continue multi-segment sewing (refer to S 1 0) to determine whether the multi-segment sewing reaches the set stitch number (refer to S 1 1). When the set value is reached, the sewing thread tension, fabric pushing amount, differential ratio, and foot press The pressure and the number of revolutions will return to the original state (refer to S 1 2), and the original normal sewing will continue. At this time, it is judged whether the next step is to perform multi-step sewing under the same conditions (refer to S 1 3). If the same conditions are not performed, the normal sewing is continued until the end of the sewing (refer to S 1 4). If the next time the seam is still sewn under the same conditions, press the multi-segment sewing memory switch (refer to S 1 3), the conditions of the multi-segment sewing mode will be sorted into the CPU (refer to S 1 5), and then normal sewing will continue. Until sewing ends (refer to S 1 4). When judging whether the number of stitches of multi-step sewing is set (refer to S 6), if the number of stitches is not set (N 0), the stitching will continue (refer to S 1 6), judge

Page 15 1240025 V. Description of the invention (12) When the break reaches the set car, the sewing thread tension and the number of revolutions will be in the mode "driving pulse horse photos", and confirm that the multi-stage car is closed 2 a (refer to S 2 0) Press the tongue and move to the above steps after turning. The present invention can be divided into multiple sections to provide the previously known disadvantages. The present invention includes problems with poor line convergence. Repeat the same. Easily repeat the number of stitches that will not sew the sewing machine when it is not in the upright position (see S1 7), and reach the set value (YES). The amount of cloth pushed, the differential ratio, the pressure on the tongue, and the switch. Go to the previous setting or the basic "Multi-section sewing reaches (refer to S 1 8). Continue the multi-section sewing (S 1 9 is the end state of sewing, press the multi-section sewing again to open, the sewing thread tension, the fabric push amount , Differential ratio, and number, will return to the original state (refer to S 1 2), 1 to 3 to 15 sewing until the end of sewing. Simple multi-section sewing switch, can be adapted to cross a good multi-section car Sewing has its advantages. Especially, it can eliminate the blockage of the seam eye of the multi-section sewing or the start of sewing and the end of sewing in the sewing of the cross-pitch inclined sewing, which can not be detected by the cloth thickness detection device. When sewing at multiple stages of sewing, the setting conditions are saved and the sewing situation is maintained. In terms of the structure of the parts, the tongue is equipped with a complicated and expensive cloth thickness detection device, the sewing operation is confirmed, and the pushing of the fabric causes obstacles.

Page 16 1240025 Brief Description of Drawings Figure 1 is a block diagram of the present invention. Fig. 2 is a flowchart of the present invention. Fig. 3 is a perspective view of a sewing machine having a multi-stage sewing device according to the present invention. Fig. 4 Sewing eye selects the day surface option. Fig. 5 is a state diagram of a sewing day surface. Fig. 6 is a state diagram of manually setting the day surface. Fig. 7 is a state diagram of the day surface of the sewing thread tension setting. Fig. 8 is a state diagram of a step setting screen. Fig. 9 (a) is an enlarged sectional view of a plurality of sections. FIG. 9 (b) is a state diagram when the foot is pressed across a plurality of sections. # [Element symbol description] 2 Multi-section sewing selection device 2 a Multi-section sewing switch 8 Display device 8 0 LCD screen 9 Memory device 9 a Multi-section sewing memory switch 10 Central processing unit (CPU) 11 Automatic sewing thread tension / Manual selection device 12 Automatic / manual selection device for main push amount 13 Automatic / manual selection device for differential ratio 14 Automatic / manual selection device for pressing the tongue

Page 17

Claims (1)

1240025 6. Scope of patent application 1 · When sewing, set the tongue pressure as the thread tension on the panel, and the cloth is suitable for multi-section vehicles 2. When sewing, set the tongue pressure as the sewing on the panel 3. When sewing, the tongue pressure is used to sew any section of the panel thread tension. 4. Sewing machine tension, pieces, can be used in a variety of modes, and the cloth number mode is applied. The fabric is equipped with segment sewing in advance. Multi-segment sewing with a proper value for sewing will be pushed and pushed, and the sewing setting is connected to a multi-segment sewing with a suitable value for sewing, which limits the low speed of the sewing machine. Sewing with appropriate stitching and appropriate sewing value Multi-segment sewing opening material pushing amount and value, switch to. In the scope of the patent, the corresponding pushing amount and press setting are memorized in the sewing machine, the thread tension and the sewing machine are set to off, and the multi-stage cutting machine is continuously set according to the pressure of the opening and closing of the tongue. In the thread tension and the sewing machine, the close is set according to the number of rotations that are opened, and it is characterized by the amount of push of the normal material and the feet, and it is arranged in the operation of the sewing machine to close the sewing machine. Any value, switch to sewing mode. It is characterized by: the amount of material pushed, the operation of the configuration, the continuous change in the operation of the ordinary car and the foot press sewing machine can make multi-section suitable for multi-position sewing machine, characterized by: the usual sewing thread tension, cloth push The sewing machine is equipped with a sewing machine that is configured to be operated by the sewing machine. According to the operation of the switch, the pressure of the sewing foot and the number of revolutions of the multi-section sewing section can be continuously changed for the multi-section sewing setting. Among the sewing machines including multi-section sewing with the multi-section sewing device described in item 1, 2, or 3, which continuously changes the stitch pressure of the sewing thread, and the number of multi-section sewing revolutions. Page 18 1240025 --- Q91977HR__q Dou Nian 5. Description of the invention (10) The formula will be: skin = division, return to the state before switching to multi-section sewing mode. When pressing; = When the multi-section sewing with the same length is repeated, the multi-section sewing ends 9a, but: After switch 仏, because of pressing the multi-section sewing memory switch, the "multi-section sewing mode" including the number of stitches has been performed.时时 ΪΓ 己? In the device 9 ..., the same multi-section sewing is repeatedly entered into the ordering guard's next multi-section sewing time; Ϊ ί ί ^ ^ F. £ 9 t Γ, the number of revolutions: the state of the night sewing It is also necessary to pay attention to the number of mouth rotations of the sewing machine, and the blade stop commanding device 5 which changes from medium to low speed on the force σ is a controller that displays the sewing machine. … The start of the drawing and the setting-The flow of the multi-stage sewing operation will be described with reference to the second drawing. First, the two-sewing condition (refer to S1). Specifically, select the appropriate sewing eye in the car first ^. In other words, as in "" once described, the eye selects the desired sewing pattern in the day surface 81; 4" 81a, "cloth edge system 3" 81b, "10 flat car system "3" Chuan, "covering the car side" 81e, "Roll-up car side 2" γ roll-on car side in the preparation stage before the start of multi-stage sewing. Sewing or force, fabric pushing amount, differential ratio, foot pressure :: each: automatic / manual selection device for the tension of the sewing thread tension ", cloth pushing amount; u suture setting, the differential ratio is automatic / The manual selection device 13 is used to press the foot manually to select the movement selection and the selection is set to 4 and set it to automatic. Then set the upper limit of the two auto / lots, and set it with the "number of revolutions" key 83h. When setting the ^ turn ^ movement of the preparation machine, press the "sewing tension" key 8 in Fig. 5 and then the "selection amount" key 83c, "foot pressure" key 83d, etc., set three: feed, and Value. Page 14