Sewing machine
By installing a detection sensor inside the sewing machine housing and a trigger on the alternating volume adjustment shaft, non-contact detection is achieved using Hall effect sensors or laser sensors, solving the problem of broken wires and improving the accuracy of presser foot movements and the reliability of detection.
Patent Information
- Application Number
- CN202520075750.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-13
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-13
AI Technical Summary
In traditional sewing machines, the problem of wire breakage caused by the rotation of the potential sensor along the alternating adjustment shaft affects the precise control and detection of the presser foot's movement.
A detection sensor is installed inside the sewing machine housing, and a trigger is installed on the alternating volume adjustment shaft. The non-contact detection using Hall effect sensors and magnetic components, or laser sensors and reflective surfaces, is used to achieve precise detection and control of the presser foot's movement.
This avoids breakage of the sensor wires, improves the reliability and durability of the detection, and enhances the accuracy and response speed of the presser foot action.
Smart Images
Figure CN223705957U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of textile machinery, in particular to a sewing machine. BACKGROUND
[0002] With the progress of electronic technology and computer technology, sewing machines gradually realize mechanization and automation. In industrial production, sewing machines can be used for mass production of clothing, bags and other products. In traditional sewing machines, the action control and detection of the presser foot are often not accurate and automated, usually relying on direct transmission of mechanical structure and manual observation and judgment, making it difficult to achieve high-precision and high-efficiency sewing operation.
[0003] To further accurately control and detect the action of the presser foot, a potential sensor is usually installed on the alternating amount adjusting shaft to feedback the angle of the alternating amount adjusting shaft, and the angle change thereof is transmitted to the electric control through an electric wire, and the electric control controls the cylinder to lift. However, since the potential sensor is installed on the alternating amount adjusting shaft, the potential sensor will rotate with the alternating amount adjusting shaft and drive the electric wire to swing, which will cause the electric wire connected to the potential sensor to break after a long time of use. CONTENT OF THE UTILITY MODEL
[0004] Therefore, it is necessary to provide a sewing machine capable of avoiding wire breakage.
[0005] To solve the above technical problems, the present application provides the following technical solutions:
[0006] A sewing machine, comprising:
[0007] a machine shell;
[0008] a detection sensor installed in the machine shell;
[0009] an alternating amount adjusting shaft rotatably installed in the machine shell and used for driving connection with a presser foot in the sewing machine, wherein a trigger is arranged on the alternating amount adjusting shaft, and the trigger is capable of rotating under the driving of the alternating amount adjusting shaft to trigger the detection sensor.
[0010] It can be understood that by arranging the detection sensor in the machine shell of the sewing machine and arranging the trigger on the alternating amount adjusting shaft, the detection sensor can be triggered by the trigger when the alternating amount adjusting shaft rotates, so as to realize accurate detection and control of the action of the presser foot in the sewing machine. In this process, the detection sensor is stationary relative to the alternating amount adjusting shaft, so that the rotation of the alternating amount adjusting shaft does not affect the electric wire connected to the detection sensor, thereby avoiding the problem of breakage of the electric wire connected to the detection sensor.
[0011] In one of the embodiments, the detection sensor is configured as a Hall sensor.
[0012] The trigger is configured as a magnetic piece.
[0013] It can be understood that, by configuring the detection sensor as a Hall sensor and the trigger as a magnetic piece, the non-contact detection is realized by the Hall effect of the Hall sensor and the magnetic piece, the mechanical wear of the Hall sensor during the rotation of the alternating amount adjusting shaft is reduced, and the reliability and durability of the detection of the Hall sensor are improved.
[0014] In one of the embodiments, a first bracket is installed on the alternating amount adjusting shaft, and the magnetic piece can be installed on the alternating amount adjusting shaft through the first bracket.
[0015] The installation position of the first bracket in the circumferential direction of the alternating amount adjusting shaft can be adjusted.
[0016] It can be understood that, by installing the magnetic piece through the first bracket and adjusting the structure of the first bracket in the circumferential direction of the alternating amount adjusting shaft, the position of the magnetic piece can be flexibly adjusted according to actual requirements, so that the detection sensor can detect the rotation angle of the alternating amount adjusting shaft under different sewing processes and parameter requirements.
[0017] In one of the embodiments, the first bracket includes a bracket plate, a bolt, and a fixing piece. The bolt is partially inserted into the alternating amount adjusting shaft along the axial direction of the alternating amount adjusting shaft and is rotationally connected with the alternating amount adjusting shaft. The part of the bolt outside the alternating amount adjusting shaft is fixedly connected with the bracket plate.
[0018] The fixing piece is inserted into the alternating amount adjusting shaft along the radial direction of the alternating amount adjusting shaft and is detachably connected with the bolt, for locking the bolt to the alternating amount adjusting shaft.
[0019] The magnetic piece is fixedly installed on the bracket plate.
[0020] It can be understood that the bracket plate is connected with the alternating amount adjusting shaft through the bolt and the fixing piece, which facilitates the first bracket to adjust the position of the magnetic piece. This connection mode also has the advantages of simple structure and convenient installation and disassembly.
[0021] In one of the embodiments, the magnetic piece is connected with the bracket plate in a threaded manner.
[0022] In one of the embodiments, a second bracket is installed in the casing, and the Hall sensor can be installed on the casing through the second bracket.
[0023] In one of the embodiments, the second support includes a connecting plate, which is arranged outside the casing and abuts against the casing.
[0024] It can be understood that, by arranging the connecting plate of the second support outside the casing and abutting against the casing, on the one hand, the installation position of the second support is located outside the casing, facilitating the installation and fixation of the second support, and on the other hand, the space occupation of the second support inside the casing is reduced, without affecting the layout of other components inside the casing.
[0025] In one of the embodiments, the Hall sensor is connected with the second support in a threaded manner.
[0026] In one of the embodiments, the detection sensor is configured as a laser sensor.
[0027] The trigger is configured as a reflecting surface, which can reflect the laser beam generated when the laser sensor works.
[0028] It can be understood that, by configuring the detection sensor as a laser sensor and the trigger as a reflecting surface, the detection precision and response speed are improved by using the high precision and high speed characteristics of the laser, and the rotation information of the alternating amount adjusting shaft can be more accurately captured.
[0029] In one of the embodiments, the reflecting surface is arranged on one end of the alternating amount adjusting shaft.
[0030] Compared with the prior art, the sewing machine can realize the accurate detection and control of the action related to the presser foot in the sewing machine by arranging the detection sensor on the casing of the sewing machine and arranging the trigger on the alternating amount adjusting shaft, so that the detection sensor can be triggered by the trigger when the alternating amount adjusting shaft rotates, in the process, the detection sensor is stationary relative to the alternating amount adjusting shaft, so that the rotation of the alternating amount adjusting shaft does not affect the electric wire electrically connected to the detection sensor, thereby avoiding the problem of breakage of the electric wire connected to the detection sensor. BRIEF DESCRIPTION OF DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0032] Figure 1 A perspective structural view of the sewing machine provided by the present application.
[0033] Figure 2 A perspective structural view of the sewing machine provided by the present application.Figure 1 Enlarged view of area A.
[0034] Figure 3 Another perspective view of the sewing machine according to the present application.
[0035] Figure 4 Another perspective view of the sewing machine according to the present application. Figure 3 Enlarged view of area B.
[0036] The reference numerals of the components are as follows:
[0037] 100, sewing machine; 10, machine housing; 11, second bracket; 111, connecting plate; 20, detection sensor; 21, Hall sensor; 30, alternate amount adjusting shaft; 31, trigger piece; 311, magnetic piece; 32, first bracket; 321, bracket plate; 322, bolt; 323, fixing piece; 40, air cylinder; 50, presser foot alternate tension spring crank. DETAILED DESCRIPTION
[0038] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other different ways than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.
[0039] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be a middle component. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only implementation.
[0040] In addition, the terms "first", "second", etc. are used only for the purpose of description and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0041] In the present application, unless specifically defined and limited otherwise, the first feature is "on", "under", "above" or "over" the second feature can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.
[0042] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.
[0043] Please refer to Figures 1 to 4 The present application provides a sewing machine 100, which comprises a machine shell 10, a detection sensor 20 and an alternating amount adjusting shaft 30. The detection sensor 20 is installed in the machine shell 10. The alternating amount adjusting shaft 30 is rotatably installed in the machine shell 10 and is used to be in driving connection with a presser foot (not shown in the figure) in the sewing machine 100. The alternating amount adjusting shaft 30 is provided with a trigger 31, and the trigger 31 can be rotated under the driving of the alternating amount adjusting shaft 30 to trigger the detection sensor 20. In this way, by arranging the detection sensor 20 in the machine shell 10 of the sewing machine 100 and arranging the trigger 31 on the alternating amount adjusting shaft 30, the detection sensor 20 can be triggered by the trigger 31 when the alternating amount adjusting shaft 30 rotates, so as to realize accurate detection and control of the related action of the presser foot in the sewing machine 100. In this process, the detection sensor 20 is stationary relative to the alternating amount adjusting shaft 30, so that the rotation of the alternating amount adjusting shaft 30 does not affect the electric wire electrically connected to the detection sensor 20, thereby avoiding the problem of breakage of the electric wire connected to the detection sensor 20.
[0044] In an embodiment, as Figure 1 and Figure 2As shown, the detection sensor 20 is configured as a Hall sensor 21, and the trigger 31 is configured as a magnetic piece 311. By configuring the detection sensor 20 as a Hall sensor 21 and the trigger 31 as a magnetic piece 311, the Hall effect of the Hall sensor 21 is utilized to realize non-contact detection of the magnetic piece 311, which can reduce mechanical wear of the Hall sensor 21 when detecting rotation of the alternate amount adjusting shaft 30, and improve reliability and durability of detection of the Hall sensor 21. Here, the magnetic piece 311 can be a magnet, a strong magnet, or other magnetic object, which will not be described herein.
[0045] As shown in Figure 2 and Figure 4 In this embodiment, a second bracket 11 is installed in the casing 10, and the Hall sensor 21 is installed on the casing 10 through the second bracket 11.
[0046] In an embodiment, the second bracket 11 includes a connecting plate 111, which is arranged on the outside of the casing 10 and is connected to the casing 10. By arranging the connecting plate 111 of the second bracket 11 on the outside of the casing 10 and connecting it to the casing 10, on the one hand, the installation position of the second bracket 11 is located on the outside of the casing 10, which facilitates installation and fixation of the second bracket 11 on the casing 10, and on the other hand, it can reduce the space occupation of the second bracket 11 inside the casing 10, without affecting the layout of other components inside the casing 10.
[0047] Here, the connecting plate 111 and the casing 10 can be connected by screws, welding, riveting, interference fit, etc. Such fixed connection methods are common in related technologies and will not be described herein.
[0048] In this embodiment, the connecting plate 111 is fixed to the casing 10 by screws.
[0049] In an embodiment, the Hall sensor 21 is connected to the second bracket 11 in a threaded manner. In other embodiments, the Hall sensor 21 can also be connected to the second bracket 11 by pin connection, riveting, etc., which will not be described herein.
[0050] As shown in Figure 2As shown, a first bracket 32 is mounted on the alternating amount adjustment shaft 30, and a magnetic component 311 can be mounted on the alternating amount adjustment shaft 30 via the first bracket 32; wherein, the mounting position of the first bracket 32 in the circumferential direction of the alternating amount adjustment shaft 30 can be adjusted. By mounting the magnetic component 311 via the first bracket 32, and by the adjustable structure of the first bracket 32 in the circumferential direction of the alternating amount adjustment shaft 30, the position of the magnetic component 311 can be flexibly adjusted according to actual needs, and it is ensured that the magnetic component 311 can trigger the Hall sensor 21 during the rotation of the first bracket 32, thereby enabling the detection sensor 20 to detect the rotation angle of the alternating amount adjustment shaft 30 under different sewing processes and parameter requirements.
[0051] In one embodiment, the first bracket 32 includes a bracket plate 321, a pin 322, and a fixing member 323. The pin 322 is partially inserted into the alternating amount adjustment shaft 30 along its axial direction and is rotatably connected to it. The portion of the pin 322 located outside the alternating amount adjustment shaft 30 is connected and fixed to the bracket plate 321. The fixing member 323 is inserted into the alternating amount adjustment shaft 30 along its radial direction and is detachably connected to the pin 322, used to lock the pin 322 onto the alternating amount adjustment shaft 30. A magnetic element 311 is fixedly mounted on the bracket plate 321. In this way, the bracket plate 321 is connected to the alternating amount adjustment shaft 30 via the pin 322 and the fixing member 323, facilitating the adjustment of the position of the magnetic element 311 by the first bracket 32. This connection method also has the advantages of simple structure and convenient installation and disassembly.
[0052] Here, the fastener 323 can be a screw, stud, or other similar structure.
[0053] In this embodiment, the magnetic component 311 is connected to the support plate 321 by means of threads.
[0054] like Figures 1 to 4 As shown, the sewing machine 100 also includes a cylinder 40 and a presser foot alternating spring crank 50. The cylinder 40 is connected to the alternation amount adjustment shaft 30 through the presser foot alternating spring crank 50, and the sewing machine 100 drives the alternation amount adjustment shaft 30 to rotate through the cylinder 40.
[0055] Here, the angle of rotation of the alternating adjustment shaft 30 is 20° to 30°.
[0056] In this embodiment, the working principle of the Hall sensor 21 in the sewing machine 100 is as follows:
[0057] The sewing machine 100 adjusts the lifting height of the cylinder 40, rotates the alternate amount adjusting shaft 30 through the presser foot alternate tension spring crank 50, and when the alternate amount adjusting shaft 30 rotates, the magnetic member 311 is driven to rotate through the first support 32, the Hall sensor 21 fixed on the second support 11 receives the magnetic force of the magnetic member 311, the angle of rotation of the alternate amount adjusting shaft 30 is determined by detecting the size of the magnetic force, and feedback is given to the cylinder 40 whether the lifting height is appropriate, when the lifting height part meets the requirements, the cylinder 40 continues to lift, and when the lifting height meets the requirements, the movement of the cylinder 40 is stopped.
[0058] In an embodiment, the detection sensor 20 can also be configured as a laser sensor (not shown in the figure); the trigger member 31 is configured as a reflecting surface (not shown in the figure), which can reflect the laser beam generated when the laser sensor works. In this way, by configuring the detection sensor 20 as a laser sensor and the trigger member 31 as a reflecting surface, the high precision and high speed characteristics of laser are utilized to improve the detection accuracy and response speed, and the rotation information of the alternate amount adjusting shaft 30 can be captured more accurately.
[0059] Further, the reflecting surface is arranged on one end of the alternate amount adjusting shaft 30. Here, the reflecting surface is specifically machined on the end of the alternate amount adjusting shaft 30 in a cutting manner. It can be understood that in other embodiments, the reflecting surface can be arranged on an object mounted on the end of the alternate amount adjusting shaft 30, which is not described here.
[0060] The technical features of the above-described embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.
[0061] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.
Claims
1. A sewing machine characterized by: The sewing machine comprises: a machine housing (10); a detection sensor (20) installed in the machine housing (10); an alternating amount adjusting shaft (30) rotatably installed in the machine housing (10) and used for being connected with a presser foot drive in the sewing machine, the alternating amount adjusting shaft (30) being provided with a trigger (31) capable of rotating under the driving of the alternating amount adjusting shaft (30) to trigger the detection sensor (20).
2. The sewing machine according to claim 1, characterized in that, The detection sensor (20) is configured as a Hall sensor (21). The trigger (31) is configured as a magnetic piece (311).
3. The sewing machine of claim 2, wherein, The alternating amount adjusting shaft (30) is provided with a first bracket (32), and the magnetic piece (311) is capable of being installed on the alternating amount adjusting shaft (30) through the first bracket (32). The installation position of the first bracket (32) in the circumferential direction of the alternating amount adjusting shaft (30) is capable of being adjusted.
4. The sewing machine of claim 3, wherein The first bracket (32) comprises a bracket plate (321), a bolt (322) and a fixing piece (323), the bolt (322) being partially inserted into the alternating amount adjusting shaft (30) along the axial direction of the alternating amount adjusting shaft (30) and being rotatably connected with the alternating amount adjusting shaft (30), wherein the part of the bolt (322) outside the alternating amount adjusting shaft (30) is connected and fixed with the bracket plate (321). The fixing piece (323) is inserted into the alternating amount adjusting shaft (30) along the radial direction of the alternating amount adjusting shaft (30) and is detachably connected with the bolt (322) for locking the bolt (322) to the alternating amount adjusting shaft (30), The magnetic piece (311) is fixedly installed on the bracket plate (321).
5. The sewing machine of claim 4, wherein, The magnetic piece (311) is connected with the bracket plate (321) in a threaded manner.
6. The sewing machine of claim 2, wherein, The machine housing (10) is provided with a second bracket (11), and the Hall sensor (21) is capable of being installed on the machine housing (10) through the second bracket (11).
7. The sewing machine of claim 6, wherein, The second bracket (11) comprises a connecting plate (111) arranged outside the machine housing (10) and abuttingly connected with the machine housing (10).
8. The sewing machine of claim 6, wherein, The Hall sensor (21) is connected with the second bracket (11) in a threaded manner.
9. The sewing machine of claim 1, wherein, The detection sensor (20) is configured as a laser sensor. The trigger (31) is configured as a reflecting surface capable of reflecting a laser beam generated when the laser sensor works.
10. The sewing machine of claim 9, wherein, The reflecting surface is arranged on one end of the alternating amount adjusting shaft (30).