Lifting device, edge guide assembly and sewing machine

Abstract

This application provides a lifting device, an edge guide assembly, and a sewing machine. The lifting device is used on a sewing machine equipped with an edge guide. The sewing machine includes a frame and a presser foot bar. The presser foot bar is disposed on the frame and can be raised and lowered relative to the frame. The edge guide is mounted on the frame and has an edge guide body that can be rotated relative to the frame. The lifting device includes: a connecting seat for connecting to the presser foot bar; a lifting platform connected to the connecting seat; and a lifting pressure rod for connecting to the edge guide body. During the process of the lifting platform rising with the presser foot bar, the lifting platform can raise the lifting pressure rod upwards, thereby lifting the edge guide body upwards. The lifting device in this embodiment allows simultaneous control of the presser foot wheel and the edge guide body by controlling the raising and lowering of the presser foot bar, and also enables material replacement. This reduces the workload of sewing workers, thereby improving the efficiency of sewing operations.

Description

Technical Field

[0001] This application relates to the field of sewing equipment technology, and in particular to a lifting device, an edge-mounting assembly, and a sewing machine. Background Technology

[0002] The edge guide is an important accessory of a sewing machine, used to control the edge distance of the stitches, thus ensuring a more uniform edge distance on the sewn items. Related technologies utilize an edge guide body that can rotate vertically relative to the sewing machine frame. When the edge guide body rotates downwards to approach the needle, the edge guide enters its working mode. In this mode, during sewing, the edge of the material rests against the edge guide body, effectively controlling the edge distance of the resulting stitches.

[0003] During sewing operations, after completing the sewing of one material, the sewing worker immediately switches to the next. In some cases, the sewing worker needs to raise the edge guide body to a certain height while changing materials, for example, when sewing one sheet onto another. The sewing requirement is that the upper sheet is roughly centered on the lower sheet, and only the seam margin of the upper sheet needs to be controlled. In this case, when changing materials, the edge guide body needs to be raised to a certain height, and both the lower and upper sheets are placed on the sewing machine's worktable, with the lower sheet positioned below the edge guide body. Then, the edge guide body is lowered back to its working mode. At this point, the lower sheet is in the gap between the edge guide body and the worktable, and the edge of the upper sheet is abutting against the edge guide body. This allows the edge guide body to control the seam margin of the upper sheet after sewing begins.

[0004] In the aforementioned sewing scenarios, sewing workers need to frequently lift and lower the edge catcher to change materials, which increases their workload, leads to fatigue, and affects sewing efficiency. Therefore, reducing the workload of sewing workers to improve sewing efficiency is a worthwhile consideration. Summary of the Invention

[0005] This application provides a lifting device, an edge-mounting assembly, and a sewing machine, designed to reduce the burden on sewing workers and improve the efficiency of sewing operations.

[0006] The specific technical solution is as follows:

[0007] An embodiment of the first aspect of this application provides a lifting device for a sewing machine equipped with an edge catch. The sewing machine includes a frame and a presser foot bar. The presser foot bar is disposed on the frame and is capable of rising and falling relative to the frame. The edge catch is mounted on the frame and has an edge catch body capable of rotating relative to the frame. The lifting device includes: a connecting seat for connecting to the presser foot bar; a lifting platform connected to the connecting seat; and a lifting pressure rod for connecting to the edge catch body. During the process of the lifting platform rising with the presser foot bar, the lifting platform can lift the lifting pressure rod upwards, thereby lifting the edge catch body upwards via the lifting pressure rod.

[0008] The lifting device in this embodiment, by setting up a lifting platform and a lifting pressure rod, can realize the linkage between the edge-holding device body and the presser foot rod. When changing materials, by controlling the raising and lowering of the presser foot rod, the presser foot wheel and the edge-holding device body can be controlled simultaneously, and the material change can be completed. In this way, sewing workers do not need to manually lift and lower the edge-holding device body when changing materials, thereby reducing the burden on sewing workers and improving the efficiency of sewing operations.

[0009] In some embodiments, the lifting rod is detachably connected to the side-mounted unit body.

[0010] In some embodiments, one end of the lifting rod is provided with a connecting portion, the connecting portion forming a mounting groove, and a locking element is provided on at least one side wall of the mounting groove.

[0011] In some embodiments, the lifting platform can be flipped relative to the connecting seat to have a switchable working position and a storage position; when the lifting platform is in the working position, the lifting platform can lift the lifting rod upward during the lifting device's ascent; when the lifting platform is in the storage position, the lifting platform does not contact the lifting rod during the lifting device's ascent.

[0012] In some embodiments, the lifting platform is hinged to the connecting seat, and the lifting device further includes a tension spring, one end of which is connected to the lifting platform and the other end of which is connected to the connecting seat.

[0013] In some embodiments, the lifting device further includes a first adjusting screw, the lifting rod is provided with a first threaded hole, the first adjusting screw cooperates with the first threaded hole, and the first adjusting screw is used to abut against the lifting platform.

[0014] In some embodiments, the lifting rod includes a first section and a second section, the first section being connected to the side-mounted body, and the second section being hinged to the first section so that the second section can move in a flipping manner between an extended position and a retracted position; when the second section is in the extended position, the lifting platform can lift the lifting rod upward during the ascent of the lifting device; when the second section is in the retracted position, the lifting platform does not contact the lifting rod during the ascent of the lifting device.

[0015] In some embodiments, the lifting device further includes a second adjusting screw, the first section is provided with a second threaded hole, the second adjusting screw cooperates with the second threaded hole, and the second adjusting screw is used to abut against the second section.

[0016] In some embodiments, the connecting seat includes a first connecting portion and a second connecting portion, the first connecting portion being connected to the presser foot rod, and the lifting platform being connected to the second connecting portion; one of the first connecting portion and the second connecting portion is provided with an adjustment hole, and the other of the first connecting portion and the second connecting portion is provided with a connection hole, and the first connecting portion and the second connecting portion are connected by fasteners passing through the adjustment hole and the connection hole.

[0017] An embodiment of the second aspect of this application provides a sewing machine that includes the lifting device in any of the above embodiments.

[0018] The sewing machine in this embodiment is based on the same inventive concept as the lifting device in the above embodiment, and therefore can have the beneficial effects of the lifting device in the corresponding embodiment.

[0019] An embodiment of the third aspect of this application provides an edge-holding assembly for a sewing machine. The sewing machine includes a frame and a presser foot bar, the presser foot bar being disposed on the frame and capable of rising and falling relative to the frame. The edge-holding assembly includes: an edge-holding device, the edge-holding device including a fixed base, a pivot, and an edge-holding device body, the fixed base being connected to the frame, and the edge-holding device body being connected to the fixed base via the pivot, so that the edge-holding device body can rotate relative to the fixed base; and a lifting device, the lifting device including a connecting seat, a lifting platform, and a lifting pressure rod, the connecting seat being connected to the presser foot bar, the lifting platform being connected to the connecting seat, and the lifting pressure rod being connected to the edge-holding device body; wherein, during the process of the lifting device rising with the presser foot bar, the lifting platform can lift the lifting pressure rod upward, so as to lift the edge-holding device body upward by means of the lifting pressure rod.

[0020] The edge-holding assembly in this embodiment, through its lifting device, enables linkage between the edge-holding body and the presser foot rod. When changing materials, controlling the raising and lowering of the presser foot rod allows simultaneous control of the presser foot wheel and the edge-holding body, completing the material change. This eliminates the need for sewing workers to manually lift and lower the edge-holding body when changing materials, thus reducing their workload and improving sewing efficiency.

[0021] In some embodiments, the siderest body includes a connecting plate and a foot, the connecting plate is connected to the rotating shaft, the foot is connected to the connecting plate, and the lifting pressure rod is connected to the connecting plate.

[0022] In some embodiments, the rotating shaft is fixedly connected to the fixed base, and a fixed bracket is fixedly connected to the end of the rotating shaft. The connecting plate is rotatably connected to the rotating shaft. The edge-adjusting assembly also includes a spring and a third adjusting screw. One end of the spring is connected to the fixed bracket, and the other end of the spring is connected to the connecting plate. The connecting plate is provided with a third threaded hole, and the third adjusting screw cooperates with the third threaded hole and abuts against the fixed bracket.

[0023] In some embodiments, the lifting platform can be flipped relative to the connecting seat to have a switchable working position and a storage position; when the lifting platform is in the working position, the lifting platform can lift the lifting rod upward during the lifting device's ascent; when the lifting platform is in the storage position, the lifting platform does not contact the lifting rod during the lifting device's ascent.

[0024] In some embodiments, the lifting platform is hinged to the connecting seat, and the lifting device further includes a tension spring, one end of which is connected to the lifting platform and the other end of which is connected to the connecting seat.

[0025] In some embodiments, the lifting device further includes a first adjusting screw, the lifting rod is provided with a first threaded hole, the first adjusting screw cooperates with the first threaded hole, and the first adjusting screw is used to abut against the lifting platform.

[0026] In some embodiments, the lifting rod has a first form and a second form that can be switched between each other; when the lifting rod is in the first form, the lifting platform can lift the lifting rod upward during the lifting process of the lifting device; when the lifting rod is in the second form, the lifting platform does not contact the lifting rod during the lifting process of the lifting device.

[0027] In some embodiments, the lifting rod includes a first section and a second section, the first section being connected to the side-mounted body, and the second section being hinged to the first section so that the second section can move in a flipping manner between an extended position and a retracted position; when the second section is in the extended position, the lifting rod is in the first configuration; when the second section is in the retracted position, the lifting rod is in the second configuration.

[0028] In some embodiments, the lifting device further includes a second adjusting screw, the first section is provided with a second threaded hole, the second adjusting screw cooperates with the second threaded hole, and the second adjusting screw is used to abut against the second section.

[0029] In some embodiments, the lifting rod is slidably engaged with the side-mounted device body to allow the lifting rod to move between a first position and a second position; when the lifting rod is in the first position, the lifting rod is in the first configuration; when the lifting rod is in the second position, the lifting rod is in the second configuration.

[0030] In some embodiments, the connecting seat includes a first connecting portion and a second connecting portion, the first connecting portion being connected to the presser foot rod, and the lifting platform being connected to the second connecting portion; one of the first connecting portion and the second connecting portion is provided with an adjustment hole, and the other of the first connecting portion and the second connecting portion is provided with a connection hole, and the first connecting portion and the second connecting portion are connected by fasteners passing through the adjustment hole and the connection hole.

[0031] An embodiment of the fourth aspect of this application provides a sewing machine that includes the edge-adjusting assembly of any of the above embodiments.

[0032] The sewing machine in this embodiment is based on the same inventive concept as the edge-holding assembly in the above embodiments, and therefore can have the beneficial effects of the edge-holding assembly in the corresponding embodiments. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a sewing machine provided in one embodiment of this application;

[0034] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0035] Figure 3 A schematic diagram illustrating the connection relationship between the lifting device and the edge-mounting device provided in an embodiment of this application;

[0036] Figure 4 for Figure 3A schematic diagram of the structure shown from another perspective;

[0037] Figure 5 A schematic diagram showing the connection relationship between the lifting device and the edge-mounting device according to another embodiment of this application;

[0038] Figure 6 for Figure 5 A schematic diagram of the structure shown from another perspective;

[0039] Figure 7 A schematic diagram illustrating the connection relationship between the lifting device and the edge-mounting device according to another embodiment of this application;

[0040] Figure 8 This is a schematic diagram illustrating the connection relationship between the connecting seat and the lifting platform according to an embodiment of this application;

[0041] Figure 9 This is a schematic diagram of the structure of a sewing machine provided in another embodiment of this application;

[0042] Figure 10 for Figure 9 Enlarged schematic diagram of part B;

[0043] Figure 11 This is a schematic diagram of the structure of an edge-mounting component provided in an embodiment of this application;

[0044] Figure 12 This is a schematic diagram of the structure of a sewing machine provided in yet another embodiment of this application;

[0045] Figure 13 for Figure 12 An enlarged schematic diagram of section C;

[0046] Figure 14 This is a schematic diagram of the structure of a side-mounted device assembly provided in another embodiment of this application;

[0047] Figure 15 for Figure 14 The diagram shows the edge-mounting assembly when the lifting platform is in the stowed position.

[0048] Figure 16 This is a schematic diagram of the structure of a sewing machine provided in another embodiment of this application;

[0049] Figure 17 for Figure 16 An enlarged schematic diagram of section C;

[0050] Figure 18 A schematic diagram of the structure of the edge-mounting component provided in another embodiment of this application;

[0051] Figure 19 for Figure 18 A schematic diagram of the structure shown from another perspective;

[0052] Figure 20 for Figure 19 The diagram shows the edge-mounting assembly when the second section is flipped to the recycling position.

[0053] Figure 21 A schematic diagram of the structure of the edge-mounting component provided in another embodiment of this application;

[0054] Figure 22 for Figure 21 The diagram shows the structure from another perspective.

[0055] Explanation of reference numerals in the attached figures:

[0056] 100. Sewing machine;

[0057] 1. Edge-aligning component;

[0058] 10. Lifting device;

[0059] 11. Connecting seat; 111. First connecting part; 112. Second connecting part; 113. Fastener; 114. Adjusting hole;

[0060] 12. Lifting platform;

[0061] 13. Lifting rod; 131. Connecting part; 1311. Mounting groove; 1312. Locking element; 132. First section; 133. Second section;

[0062] 14. Tension spring;

[0063] 15. First adjusting screw;

[0064] 16. Second adjusting screw;

[0065] 20. Edge guide;

[0066] 21. Fixed base;

[0067] 22. Shaft;

[0068] 23. Side rail body; 231. Connecting plate; 232. Side foot; 233. Slide groove;

[0069] 24. Fixed bracket;

[0070] 30. Third adjusting screw;

[0071] 40. Spring;

[0072] 2. Rack;

[0073] 3. Presser foot bar;

[0074] 4. Presser wheels;

[0075] 5. Needle;

[0076] 6. Workbench. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0078] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0081] like Figure 1 , Figure 2 as well as Figure 3As shown, an embodiment of the first aspect of this application provides a lifting device 10 for a sewing machine 100 equipped with an edge catch 20. The sewing machine 100 includes a frame 2 and a presser foot 3. The presser foot 3 is disposed on the frame 2 and is capable of rising and falling relative to the frame 2. The edge catch 20 is mounted on the frame 2 and has an edge catch body 23 capable of rotating relative to the frame 2. The lifting device 10 includes a connecting seat 11, a lifting platform 12, and a lifting pressure rod 13. The connecting seat 11 is connected to the presser foot 3, the lifting platform 12 is connected to the connecting seat 11, and the lifting pressure rod 13 is connected to the edge catch body 23. During the process of the lifting platform 12 rising with the presser foot 3, the lifting platform 12 can lift the lifting pressure rod 13 upwards, thereby lifting the edge catch body 23 upwards via the lifting pressure rod 13.

[0082] It should be noted that the presser foot bar 3 is a common component in sewing machine 100, and its function is to mount the presser foot wheel 4. The presser foot bar 3 can be raised and lowered relative to the machine frame 2. During sewing operations, the presser foot bar 3 can drive the presser foot wheel 4 to descend, thereby using the presser foot wheel 4 to hold down the material to be sewn, thus preventing the material from lifting during the sewing process. At the same time, the presser foot wheel 4 can roll relative to the presser foot bar 3, so that while holding down the material, it does not affect the forward transport of the material.

[0083] It should also be noted that the edge guide 20 has a working mode and a non-working mode. When the edge guide body 23 is flipped down to be close to the needle 5, the edge guide 20 enters the working mode. In the working mode, the foot 232 of the edge guide body 23 is in contact with the worktable 6 of the sewing machine 1, or there is a very small gap between it and the worktable 6. The edge of the material whose stitch distance needs to be controlled is against the edge guide body 23 (specifically against the foot 232 in the edge guide body 23). And during the sewing process, the material can always be against the edge guide body 23, thereby controlling the stitch distance. The following example illustrates a scenario where a very small gap is required between the foot 232 and the worktable 6 in the working mode of the edge guide 20: When two sheets are sewn together, and the sewing requirement is that the upper sheet is roughly centered on the lower sheet, and only the seam margin of the upper sheet needs to be controlled, the lower sheet must pass through the gap between the foot 232 and the worktable 6 during the sewing process. This means that a very small gap is required between the foot 232 and the worktable 6 in this situation.

[0084] The lifting device 10 includes a connecting seat 11, a lifting platform 12, and a lifting rod 13. The connecting seat 11 is used to connect to the presser foot rod 3, and the lifting platform 12 is connected to the connecting seat 11. Thus, the lifting platform 12 can be mounted on the presser foot rod 3 via the connecting seat 11, allowing the lifting platform 12 to rise and fall with the presser foot rod 3. The lifting rod 13 is used to connect to the edge-holding device body 23. When the lifting rod 13 is connected to the edge-holding device body 23, as the lifting device 10 rises with the presser foot rod 3, the lifting platform 12 can lift the lifting rod 13 upwards, thereby lifting the edge-holding device body 23 upwards. By setting the lifting platform 12 and the lifting rod 13, the edge-holding device body 23 can be linked with the presser foot rod 3, thereby enabling the edge-holding device body 23 to move substantially synchronously with the presser foot wheel 4. In this way, when the sewing worker changes materials, the presser foot 4 can be raised simultaneously, causing the edge-holding device body 23 to be raised as well. At this time, the lower and upper layers of material can be placed, with the lower layer placed under the edge-holding device body 23 (even after the edge-holding device body 23 returns to its working mode, the lower layer still passes under it), while the upper layer avoids the edge-holding device body 23. Then, the presser foot 4 is lowered, and the edge-holding device body 23 also lowers (the edge-holding device body 23 moves downwards under the action of the spring 40) until the presser foot 4 presses down on the upper and lower layers of material, with the edge of the upper layer abutting against the edge-holding device body 23. From the above process, it can be seen that the sewing worker only needs to control the raising and lowering of the presser foot lever 3 to simultaneously control the presser foot 4 and the edge-holding device body 23, and complete the material change.

[0085] The lifting device 10 in this embodiment, by setting up a lifting platform 12 and a lifting pressure rod 13, can realize the linkage between the edge-holding body 23 and the presser foot rod 3. When changing materials, by controlling the raising and lowering of the presser foot rod 3, the presser foot wheel 4 and the edge-holding body 23 can be controlled simultaneously, and the material change can be completed. In this way, the sewing worker does not need to manually raise and lower the edge-holding body 23 when changing materials, thereby reducing the burden on the sewing worker and improving the efficiency of sewing operations.

[0086] It should be noted that the edge-holding device 20 is usually equipped with a spring 40 to keep the edge-holding device body 23 in the working mode. During the aforementioned material replacement process, when the presser foot rod 3 drives the presser foot wheel 4 to move downward, the edge-holding device body 23 will also move downward under the action of the spring 40, thus returning to the working mode.

[0087] like Figure 3 , Figure 4 As shown, in some embodiments, the lifting rod 13 is detachably connected to the siderest body 23. This facilitates the installation of the lifting rod 13 with the siderest body 23 of any existing siderest 20.

[0088] Furthermore, the connecting seat 11 and the presser foot bar 3 are also detachably connected (e.g., by screws). This facilitates the installation of the connecting seat 11 with an existing sewing machine 100. Consequently, the lifting device 10 can be easily installed in a sewing machine 100 equipped with an edge catcher 20.

[0089] like Figure 3 , Figure 4 As shown, in one embodiment, one end of the lifting rod 13 is provided with a connecting part 131, the connecting part 131 is formed with a mounting groove 1311, the mounting groove 1311 is used to assemble with the side-mounting device body 23, and a locking member 1312 is provided on at least one side wall of the mounting groove 1311.

[0090] When connecting the lifting rod 13 to the edge-holding device body 23, the mounting groove 1311 can be used to engage the edge of the edge-holding device body 23. Then, the locking member 1312 can be used to lock the connecting part 131 to the edge-holding device body 23. This achieves a stable connection between the lifting rod 13 and the edge-holding device body 23.

[0091] For example, the locking member 1312 is a screw. By tightening the screw, the end of the screw can be tightly abutted against the body 23 of the edge-mounting device, thereby locking and fixing the connecting part 131 to the body 23 of the edge-mounting device.

[0092] like Figure 3 , Figure 4 As shown, in some embodiments, the lifting platform 12 can be flipped relative to the connecting seat 11 to allow the lifting platform 12 to have switchable working and storage positions. When the lifting platform 12 is in the working position, it can raise the lifting rod 13 upwards during the ascent of the lifting device 10. When the lifting platform 12 is in the storage position, it does not contact the lifting rod 13 during the ascent of the lifting device 10.

[0093] During sewing operations, in some cases, sewing workers may want the presser foot 3 to rise while the edge catcher body 23, which is in working mode, remains in place.

[0094] For example, two sheets are sewn together, one on top of the other, with the sewing requirement that the edges of the upper and lower sheets be flush. In this case, when changing materials, the sewing worker will control the presser foot lever 3 to rise, causing the presser foot wheel 4 to lift, so as to remove the sewn material and put in the next material to be processed. Since the processing requirement is that the edges of the upper and lower materials be flush, the sewing worker wants the edge guide body 23 to remain in its original position so that after the material is put in, the edges of both the upper and lower sheets can abut against the edge guide body 23.

[0095] For example, when sewing decorative lines into a single sheet of material, the edge of the sheet needs to be against the edge-holding device body 23 during processing. In this case, when changing materials, only the presser foot rod 3 controls the presser wheel 4 to rise, and the edge-holding device body 23 does not need to be raised. After the new material is placed in, the edge of the sheet can directly abut against the edge-holding device body 23.

[0096] When faced with the situation where only the presser foot 3 needs to rise while the siderest body 23 needs to remain in place, the lifting platform 12 can be adjusted to the storage position so that the lifting platform 12 does not contact the lifting pressure rod 13 during the process of rising with the presser foot 3. In this way, the linkage between the siderest body 23 and the lifting platform 12 is released. At this time, the usage requirement of the presser foot 3 rising while the siderest body 23 in working mode remains in place can be met.

[0097] like Figure 3 , Figure 4 As shown, in one embodiment, the lifting platform 12 is hinged to the connecting seat 11, and the lifting device 10 also includes a tension spring 14, one end of which is connected to the lifting platform 12 and the other end of which is connected to the connecting seat 11.

[0098] The lifting platform 12 is hinged to the connecting seat 11, which allows the lifting platform 12 to be flipped relative to the connecting seat 11. In addition, the tension of the tension spring 14 can keep the lifting platform 12 relatively stably in the working position or the storage position.

[0099] like Figure 3 , Figure 4 As shown, in one embodiment, the lifting device 10 further includes a first adjusting screw 15, the lifting rod 13 is provided with a first threaded hole, the first adjusting screw 15 cooperates with the first threaded hole, and the first adjusting screw 15 is used to abut against the lifting platform 12.

[0100] When the edge guide 20 is in working mode and the lifting platform 12 is in working position, the first adjusting screw 15 abuts against the lifting platform 12. At this time, by rotating the first adjusting screw 15, the height of the foot 232 in the edge guide body 23 can be adjusted slightly, thereby adjusting the gap between the foot 232 and the worktable 6. When material passes through the gap between the foot 232 and the worktable 6 (for example, when two sheets are sewn together, with the upper sheet located in the center of the lower sheet and only the seam margin of the upper sheet needs to be controlled, the lower sheet needs to pass through the gap between the foot 232 and the worktable 6 during the sewing process), the size of the gap can be adjusted according to the thickness of the material to ensure that materials of different thicknesses can pass through the gap, thereby meeting the processing requirements of materials of different thicknesses.

[0101] like Figure 5 , Figure 6 As shown, in some embodiments, the lifting rod 13 includes a first segment 132 and a second segment 133. The first segment 132 is connected to the side-mounted unit 23, and the second segment 133 is hinged to the first segment 132 so that the second segment 133 can move in a flipping manner between an extended position and a retracted position. When the second segment 133 is in the extended position, the lifting platform 12 can lift the lifting rod 13 upward during the ascent of the lifting device 10. When the second segment 133 is in the retracted position, the lifting platform 12 does not contact the lifting rod 13 during the ascent of the lifting device 10.

[0102] It is understandable that when the lifting rod 13 is connected to the side-mounted device body 23, the second section 133 is located on the side of the first section 132 away from the side-mounted device body 23.

[0103] During sewing operations, if the sewing worker wants the presser foot lever 3 to rise while the edge-holding device body 23 remains stationary when changing materials, the second section 133 of the lifting lever 13 can be adjusted to the retracted position. This allows the lifting platform 12 to rise along with the presser foot lever 3 without contacting the lifting lever 13. In this way, the linkage between the edge-holding device body 23 and the lifting platform 12 is released. At this point, the requirement for the presser foot lever 3 to rise while the edge-holding device body 23 remains stationary in the working mode can be met.

[0104] like Figure 5 , Figure 6 As shown, in one embodiment, the lifting device 10 further includes a second adjusting screw 16, the first section 132 is provided with a second threaded hole, the second adjusting screw 16 cooperates with the second threaded hole, and the second adjusting screw 16 is used to abut against the second section 133.

[0105] With the edge guide 20 in working mode and the second section 133 of the lifting lever 13 in the extended position, the angle between the second section 133 and the first section 132 can be adjusted by rotating the second adjusting screw 16. This allows for a slight adjustment of the height of the foot 232 in the edge guide body 23, thereby adjusting the gap between the foot 232 and the worktable 6. When material passes through the gap between the foot 232 and the worktable 6, the size of the gap can be adjusted according to the thickness of the material to ensure that materials of different thicknesses can pass through, thus meeting the processing requirements of materials of different thicknesses.

[0106] like Figure 7 As shown, in one embodiment, a connecting portion 131 is provided at one end of the first segment 132. The connecting portion 131 and the first segment 132 can be connected by screws, or the connecting portion 131 and the first segment 132 can be an integral structure. When the connecting portion 131 and the first segment 132 are connected by screws, the included angle between the connecting portion 131 and the first segment 132 is adjustable, as is the included angle between the first segment 132 and the second segment 133. Thus, by adjusting the included angles between the connecting portion 131 and the first segment 132, and between the first segment 132 and the second segment 133, the lifting rod 13 can be adapted to the side-adjusting body 23 produced by different manufacturers.

[0107] It is understandable that the tilt angle of the edge-holding body 23 in working mode is different after it is installed on the sewing machine 100 by different manufacturers. By adjusting the included angle between the connecting part 131 and the first section 132 and the included angle between the first section 132 and the second section 133, the lifting pressure rod 13 can be adapted to different installation angles, thereby ensuring that the lifting pressure rod 13 can be installed on the edge-holding body 23 produced by different manufacturers.

[0108] In another embodiment, the connecting portion 131 itself is constructed as the first segment 132, that is, the first segment 132 and the connecting portion 131 are the same component.

[0109] like Figure 8As shown, in some embodiments, the connecting seat 11 includes a first connecting portion 111 and a second connecting portion 112. The first connecting portion 111 is connected to the presser foot rod 3, and the lifting platform 12 is connected to the second connecting portion 112. One of the first connecting portion 111 and the second connecting portion 112 is provided with an adjustment hole 114, and the other of the first connecting portion 111 and the second connecting portion 112 is provided with a connecting hole. The first connecting portion 111 and the second connecting portion 112 are connected by a fastener 113 passing through the adjustment hole 114 and the connecting hole. For example, the fastener 113 can be a screw, and the adjustment hole 114 can be a runway hole.

[0110] With this configuration, the vertical position of the second connecting part 112 relative to the first connecting part 111 can be adjusted by adjusting the position of the fastener 113 in the adjusting hole 114. When the connecting seat 11 is installed on the sewing machine 100, the lifting platform 12 can be adjusted to a suitable height using the above adjustment. For example, when the edge catcher body 23 is in working mode, the height of the lifting platform 12 can be such that the lifting platform 12 just contacts the lifting pressure rod 13.

[0111] An embodiment of the second aspect of this application provides a sewing machine 100, which includes the lifting device 10 in any of the embodiments of the first aspect described above.

[0112] The sewing machine 100 in this embodiment is based on the same inventive concept as the lifting device 10 in the above embodiment, and therefore can have the beneficial effects of the lifting device 10 in the corresponding embodiment.

[0113] like Figure 9 , Figure 10 as well as Figure 11 As shown, an embodiment of the third aspect of this application provides an edge-holding assembly 1 for a sewing machine 100. The sewing machine 100 includes a frame 2 and a presser foot 3. The presser foot 3 is disposed on the frame 2 and is capable of rising and falling relative to the frame 2. The edge-holding assembly 1 includes an edge-holding device 20 and a lifting device 10. The edge-holding device 20 includes a fixed base 21, a rotating shaft 22, and an edge-holding device body 23. The fixed base 21 is connected to the frame 2, and the edge-holding device body 23 is connected to the fixed base 21 via the rotating shaft 22, so that the edge-holding device body 23 can be rotated relative to the fixed base 21. The lifting device 10 includes a connecting seat 11, a lifting platform 12, and a lifting pressure rod 13. The connecting seat 11 is used to connect to the presser foot 3, the lifting platform 12 is connected to the connecting seat 11, and the lifting pressure rod 13 is connected to the edge-holding device body 23. During the process of the lifting device 10 rising with the presser foot 3, the lifting platform 12 can lift the lifting pressure rod 13 upwards, thereby lifting the edge-holding device body 23 upwards via the lifting pressure rod 13.

[0114] Specifically, the edge guide body 23 is connected to the fixed base 21 via a pivot 22, and the fixed base 21 is connected to the frame 2 of the sewing machine 100, which allows the edge guide body 23 to rotate relative to the frame 2. The edge guide 20 has a working mode and a non-working mode. When the edge guide body 23 rotates downward to be close to the needle 5, the edge guide 20 enters the working mode. In the working mode, the foot 232 of the edge guide body 23 contacts the worktable 6 of the sewing machine 1, or there is a small gap between the edge guide body 23 and the worktable 6. The edge of the material whose stitch distance needs to be controlled abuts against the edge guide body 23 (specifically against the foot 232 in the edge guide body 23), and during the sewing process, the material can always abut against the edge guide body 23, thereby controlling the stitch distance. The following example illustrates a scenario where a very small gap is required between the foot 232 and the worktable 6 in the working mode of the edge guide 20: When two sheets are sewn together, and the sewing requirement is that the upper sheet is roughly centered on the lower sheet, and only the seam margin of the upper sheet needs to be controlled, the lower sheet must pass through the gap between the foot 232 and the worktable 6 during the sewing process. This means that a very small gap is required between the foot 232 and the worktable 6 in this situation.

[0115] The lifting device 10 includes a connecting seat 11, a lifting platform 12, and a lifting rod 13. The connecting seat 11 is used to connect to the presser foot rod 3, and the lifting platform 12 is connected to the connecting seat 11. Thus, the lifting platform 12 can be mounted on the presser foot rod 3 via the connecting seat 11, allowing it to rise and fall with the presser foot rod 3. The lifting rod 13 is connected to the siderest body 23. During the upward movement of the lifting device 10 with the presser foot rod 3, the lifting platform 12 can raise the lifting rod 13, thereby lifting the siderest body 23 upward. By setting the lifting platform 12 and the lifting rod 13, the siderest body 23 can be linked with the presser foot rod 3, enabling the siderest body 23 to move approximately synchronously with the presser foot wheel 4. In this way, when the sewing worker changes materials, the presser foot 4 can be raised simultaneously, causing the edge-holding device body 23 to be raised as well. At this time, the lower and upper layers of material can be placed, with the lower layer placed under the edge-holding device body 23 (even after the edge-holding device body 23 returns to its working mode, the lower layer still passes under it), while the upper layer avoids the edge-holding device body 23. Then, the presser foot 4 is lowered, and the edge-holding device body 23 also lowers (the edge-holding device body 23 moves downwards under the action of the spring 40) until the presser foot 4 presses down on the upper and lower layers of material, with the edge of the upper layer abutting against the edge-holding device body 23. From the above process, it can be seen that the sewing worker only needs to control the raising and lowering of the presser foot lever 3 to simultaneously control the presser foot 4 and the edge-holding device body 23, and complete the material change.

[0116] It is understood that the lifting rod 13 and the side-mounted body 23 can be connected in a detachable manner (e.g., by screws) or in a non-detachable manner (e.g., by welding, or the two are integrally molded structures).

[0117] The edge-holding assembly 1 in this embodiment, through its lifting device 10, enables the linkage between the edge-holding body 23 and the presser foot rod 3. When changing materials, by controlling the raising and lowering of the presser foot rod 3, both the presser foot wheel 4 and the edge-holding body 23 can be controlled simultaneously, thus completing the material change. In this way, sewing workers do not need to manually lift and lower the edge-holding body 23 when changing materials, thereby reducing their workload and improving the efficiency of sewing operations.

[0118] like Figure 11 As shown, in some embodiments, the side restor body 23 includes a connecting plate 231 and a foot 232. The connecting plate 231 is connected to the rotating shaft 22, the foot 232 is connected to the connecting plate 231, and the lifting pressure rod 13 is connected to the connecting plate 231.

[0119] During the rotation of the edge-holding device body 23 relative to the frame 2, the connecting plate 231 drives the foot 232 to move. When the edge-holding device 20 is in working mode, the foot 232 is located near the needle 5 of the sewing machine 100 and in contact with the worktable 6 of the sewing machine 100, or there is a small gap between them. During the sewing operation, the material is conveyed forward while being sewn, but the edge of the material always rests against the foot 232, so that the stitches formed on the material can have a relatively consistent edge distance.

[0120] Understandably, when the edge guide 20 is in non-working mode, the connecting plate 231 drives the foot 232 to flip upwards to a position away from the needle 5.

[0121] like Figure 11 As shown, in one embodiment, the rotating shaft 22 is fixedly connected to the fixed base 21, and a fixed bracket 24 is fixedly connected to the end of the rotating shaft 22. The connecting plate 231 is rotatably connected to the rotating shaft 22. The edge-mounting assembly 1 also includes a spring 40 and a third adjusting screw 30. One end of the spring 40 is connected to the fixed bracket 24, and the other end of the spring 40 is connected to the connecting plate 231. The connecting plate 231 is provided with a third threaded hole, and the third adjusting screw 30 cooperates with the third threaded hole and abuts against the fixed bracket 24.

[0122] Spring 40 connects the fixed bracket 24 and the connecting plate 231. The tension of spring 40 keeps the edge guide in working mode. Additionally, rotating the third adjusting screw 30 adjusts the angle between the edge guide body 23 and the fixed bracket 24, thereby slightly adjusting the height of the foot 232 in the edge guide body 23, and consequently adjusting the gap between the foot 232 and the worktable 6. When material passes through the gap between the foot 232 and the worktable 6, the size of the gap can be adjusted according to the thickness of the material to ensure that materials of different thicknesses can pass through, thus meeting the processing requirements of materials of varying thicknesses.

[0123] like Figure 12 , Figure 13 , Figure 14 as well as Figure 15 As shown, in some embodiments, the lifting platform 12 can be flipped relative to the connecting seat 11 to allow the lifting platform 12 to have switchable working and storage positions. When the lifting platform 12 is in the working position, it can raise the lifting rod 13 upwards during the ascent of the lifting device 10. When the lifting platform 12 is in the storage position, it does not contact the lifting rod 13 during the ascent of the lifting device 10.

[0124] During sewing operations, in some cases, sewing workers may want the presser foot 3 to rise while the edge catcher body 23, which is in working mode, remains in place.

[0125] For example, two sheets are sewn together, one on top of the other, with the sewing requirement that the edges of the upper and lower sheets be flush. In this case, when changing materials, the sewing worker will control the presser foot lever 3 to rise, causing the presser foot wheel 4 to lift, so as to remove the sewn material and put in the next material to be processed. Since the processing requirement is that the edges of the upper and lower materials be flush, the sewing worker wants the edge guide body 23 to remain in its original position so that after the material is put in, the edges of both the upper and lower sheets can abut against the edge guide body 23.

[0126] For example, when sewing decorative lines into a single sheet of material, the edge of the sheet needs to be against the edge-holding device body 23 during processing. In this case, when changing materials, only the presser foot rod 3 controls the presser wheel 4 to rise, and the edge-holding device body 23 does not need to be raised. After the new material is placed in, the edge of the sheet can directly abut against the edge-holding device body 23.

[0127] When faced with the situation where only the presser foot 3 needs to rise while the siderest body 23 needs to remain in place, the lifting platform 12 can be adjusted to the storage position so that the lifting platform 12 does not contact the lifting pressure rod 13 during the process of rising with the presser foot 3. In this way, the linkage between the siderest body 23 and the lifting platform 12 is released. At this time, the usage requirement of the presser foot 3 rising while the siderest body 23 in working mode remains in place can be met.

[0128] In one embodiment, the lifting platform 12 is hinged to the connecting seat 11, and the lifting device 10 also includes a tension spring 14, one end of which is connected to the lifting platform 12 and the other end of which is connected to the connecting seat 11.

[0129] The lifting platform 12 is hinged to the connecting seat 11, which allows the lifting platform 12 to be flipped relative to the connecting seat 11. In addition, the tension of the tension spring 14 can keep the lifting platform 12 relatively stably in the working position or the storage position.

[0130] In one embodiment, the lifting device 10 further includes a first adjusting screw 15, the lifting rod 13 is provided with a first threaded hole, the first adjusting screw 15 cooperates with the first threaded hole, and the first adjusting screw 15 is used to abut against the lifting platform 12.

[0131] With the edge guide 20 in working mode and the lifting platform 12 in the working position, the first adjusting screw 15 abuts against the lifting platform 12. At this time, by rotating the first adjusting screw 15, the height of the foot 232 in the edge guide body 23 can be adjusted slightly, thereby adjusting the gap between the foot 232 and the worktable 6. When material passes through the gap between the foot 232 and the worktable 6, the size of the gap can be adjusted according to the thickness of the material to ensure that materials of different thicknesses can pass through the gap, thus meeting the processing requirements of materials of different thicknesses.

[0132] In some embodiments, the lifting rod 13 has a first form and a second form that can be switched between each other. When the lifting rod 13 is in the first form, the lifting platform 12 can lift the lifting rod 13 upwards during the ascent of the lifting device 10. When the lifting rod 13 is in the second form, the lifting platform 12 does not contact the lifting rod 13 during the ascent of the lifting device 10.

[0133] During sewing operations, if the sewing worker wants the presser foot 3 to rise while the edge-holding body 23 remains stationary when changing materials, the lifting presser 13 can be switched to the second mode. This allows the lifting platform 12 to rise along with the presser foot 3 without contacting the lifting presser 13. In this way, the linkage between the edge-holding body 23 and the lifting platform 12 is released. At this point, the need for the presser foot 3 to rise while the edge-holding body 23 remains stationary in the working mode can be met.

[0134] like Figure 16 , Figure 17 , Figure 18 , Figure 19 as well as Figure 20 As shown, in one embodiment, the lifting lever 13 includes a first section 132 and a second section 133. The first section 132 is connected to the side-adjusting body 23, and the second section 133 is hinged to the first section 132 so that the second section 133 can move in a flipping manner between an extended position and a retracted position. When the second section 133 is in the extended position, the lifting lever 13 is in a first configuration. When the second section 133 is in the retracted position, the lifting lever 13 is in a second configuration.

[0135] The lifting rod 13 is constructed to include a first section 132 and a second section 133, and the second section 133 can be flipped relative to the first section 132, thereby allowing adjustment of the shape of the lifting rod 13. Specifically, when the second section 133 is flipped to the extended position, the lifting rod 13 is adjusted to the first shape, at which time the lifting platform 12 can lift the lifting rod 13 upward, that is, the side-adjusting device body 23 and the lifting platform 12 maintain a linkage relationship. When the second section 133 is flipped to the retracted position, the lifting rod 13 is adjusted to the second shape, at which time the lifting platform 12 does not contact the lifting rod 13 during the upward movement of the lifting device 10, that is, the linkage relationship between the side-adjusting device body 23 and the lifting platform 12 is released.

[0136] It is understandable that during the process of changing the form of the lifting rod 13, the second segment 133 can be flipped vertically relative to the first segment 132, or it can be flipped horizontally relative to the first segment 132, or the second segment 133 can be flipped relative to the first segment 132 around an axis in any direction. This application does not limit the direction of the flipping.

[0137] like Figure 18 , Figure 19 As shown, in one embodiment, the lifting device 10 further includes a second adjusting screw 16, the first section 132 is provided with a second threaded hole, the second adjusting screw 16 cooperates with the second threaded hole, and the second adjusting screw 16 is used to abut against the second section 133.

[0138] With the edge guide 20 in working mode and the second section 133 of the lifting lever 13 in the extended position, the angle between the second section 133 and the first section 132 can be adjusted by rotating the second adjusting screw 16. This allows for a slight adjustment of the height of the foot 232 in the edge guide body 23, thereby adjusting the gap between the foot 232 and the worktable 6. When material passes through the gap between the foot 232 and the worktable 6, the size of the gap can be adjusted according to the thickness of the material to ensure that materials of different thicknesses can pass through, thus meeting the processing requirements of materials of different thicknesses.

[0139] like Figure 21 , Figure 22 As shown, in one embodiment, the lifting rod 13 is slidably engaged with the side-mounted device body 23, allowing the lifting rod 13 to move between a first position and a second position. When the lifting rod 13 is in the first position, it is in a first configuration. When the lifting rod 13 is in the second position, it is in a second configuration.

[0140] For example, the side-mounted device body 23 is formed with a groove 233, and a part of the lifting rod 13 is slidably connected to the groove 233 to achieve a sliding fit between the lifting rod 13 and the side-mounted device body 23.

[0141] The lifting rod 13 is configured to slide relative to the side-mounted unit body 23, thereby adjusting its shape by sliding the lifting rod 13. Specifically, when the lifting rod 13 slides towards the lifting platform 12 to a first position, the lifting rod 13 is adjusted to a first shape. At this time, the lifting platform 12 can lift the lifting rod 13 upward, that is, the side-mounted unit body 23 and the lifting platform 12 maintain a linkage relationship. When the lifting rod 13 slides away from the lifting platform 12 to a second position, the lifting rod 13 is adjusted to a second shape. At this time, the lifting platform 12 does not contact the lifting rod 13 during the upward movement of the lifting device 10, that is, the linkage relationship between the side-mounted unit body 23 and the lifting platform 12 is released.

[0142] like Figure 8 As shown, in some embodiments, the connecting seat 11 includes a first connecting portion 111 and a second connecting portion 112. The first connecting portion 111 is connected to the presser foot rod 3, and the lifting platform 12 is connected to the second connecting portion 112. One of the first connecting portion 111 and the second connecting portion 112 is provided with an adjustment hole 114, and the other of the first connecting portion 111 and the second connecting portion 112 is provided with a connecting hole. The first connecting portion 111 and the second connecting portion 112 are connected by a fastener 113 passing through the adjustment hole 114 and the connecting hole. For example, the fastener 113 can be a screw, and the adjustment hole 114 can be a runway hole.

[0143] With this configuration, the vertical position of the second connecting part 112 relative to the first connecting part 111 can be adjusted by adjusting the position of the fastener 113 in the adjusting hole 114. When the connecting seat 11 is installed on the sewing machine 100, the lifting platform 12 can be adjusted to a suitable height using the above adjustment. For example, when the edge catcher body 23 is in working mode, the height of the lifting platform 12 can be such that the lifting platform 12 just contacts the lifting pressure rod 13.

[0144] An embodiment of the fourth aspect of this application provides a sewing machine 100, which includes the edge-mounting assembly 1 in any of the embodiments of the third aspect described above.

[0145] The sewing machine 100 in this embodiment is based on the same inventive concept as the edge-holding assembly 1 in the above embodiment, and therefore can have the beneficial effects of the edge-holding assembly 1 in the corresponding embodiment.

[0146] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lifting device (10) for a sewing machine (100) equipped with an edge catch (20), the sewing machine (100) comprising a frame (2) and a presser foot bar (3), the presser foot bar (3) being disposed on the frame (2) and capable of being raised and lowered relative to the frame (2), the edge catch (20) being mounted on the frame (2) and having an edge catch body (23) capable of being rotated relative to the frame (2), characterized in that, The lifting device (10) includes: Connecting seat (11), the connecting seat (11) is used to connect with the presser foot rod (3); A lifting platform (12) is connected to the connecting seat (11); A lifting pressure rod (13) is used to connect to the side-mounted device body (23); During the process of the lifting platform (12) rising with the pressure foot rod (3), the lifting platform (12) can lift the lifting pressure rod (13) upward, so as to lift the side-mounted device body (23) upward through the lifting pressure rod (13).

2. The lifting device (10) according to claim 1, characterized in that, The lifting rod (13) is detachably connected to the side-mounted body (23).

3. The lifting device (10) according to claim 2, characterized in that, One end of the lifting rod (13) is provided with a connecting part (131), the connecting part (131) forms a mounting groove (1311), and a locking element (1312) is provided on at least one side wall of the mounting groove (1311).

4. The lifting device (10) according to claim 1, characterized in that, The lifting platform (12) can be flipped relative to the connecting seat (11) so that the lifting platform (12) has a working position and a storage position that can be switched between each other; When the lifting platform (12) is in the working position, the lifting platform (12) can lift the lifting rod (13) upward during the process of the lifting device (10) rising. When the lifting platform (12) is in the storage position, the lifting platform (12) does not contact the lifting pressure rod (13) during the process of the lifting device (10) rising.

5. The lifting device (10) according to claim 4, characterized in that, The lifting platform (12) is hinged to the connecting seat (11), and the lifting device (10) also includes a tension spring (14), one end of which is connected to the lifting platform (12), and the other end of which is connected to the connecting seat (11).

6. The lifting device (10) according to claim 4, characterized in that, The lifting device (10) further includes a first adjusting screw (15), the lifting pressure rod (13) is provided with a first threaded hole, the first adjusting screw (15) cooperates with the first threaded hole, and the first adjusting screw (15) is used to abut against the lifting platform (12).

7. The lifting device (10) according to claim 1, characterized in that, The lifting rod (13) includes a first section (132) and a second section (133). The first section (132) is used to connect with the side-mounted body (23). The second section (133) is hinged to the first section (132) so that the second section (133) can move between an extended position and a retracted position in a flipping manner. When the second section (133) is in the extended position, the lifting platform (12) can lift the lifting rod (13) upward during the process of the lifting device (10) rising. When the second section (133) is in the retraction position, the lifting platform (12) does not contact the lifting rod (13) during the ascent of the lifting device (10).

8. The lifting device (10) according to claim 7, characterized in that, The lifting device (10) further includes a second adjusting screw (16), the first section (132) is provided with a second threaded hole, the second adjusting screw (16) cooperates with the second threaded hole, and the second adjusting screw (16) is used to abut against the second section (133).

9. The lifting device (10) according to any one of claims 1 to 8, characterized in that, The connecting seat (11) includes a first connecting part (111) and a second connecting part (112). The first connecting part (111) is connected to the presser foot rod (3), and the lifting platform (12) is connected to the second connecting part (112). One of the first connecting part (111) and the second connecting part (112) is provided with an adjustment hole (114), and the other of the first connecting part (111) and the second connecting part (112) is provided with a connection hole. The first connecting part (111) and the second connecting part (112) are connected by a fastener (113) passing through the adjustment hole (114) and the connection hole.

10. An edge-mounting assembly (1) for a sewing machine (100), the sewing machine (100) including a frame (2) and a presser foot bar (3), the presser foot bar (3) being disposed on the frame (2) and capable of being raised and lowered relative to the frame (2), characterized in that, The edge-mounting component (1) includes: The edge-mounting device (20) includes a fixed base (21), a rotating shaft (22), and an edge-mounting device body (23). The fixed base (21) is connected to the frame (2), and the edge-mounting device body (23) is connected to the fixed base (21) through the rotating shaft (22) so that the edge-mounting device body (23) can be rotated relative to the fixed base (21). The lifting device (10) includes a connecting seat (11), a lifting platform (12) and a lifting pressure rod (13). The connecting seat (11) is used to connect with the pressure foot rod (3), the lifting platform (12) is connected with the connecting seat (11), and the lifting pressure rod (13) is connected with the side-mounted device body (23). During the process of the lifting device (10) rising with the pressure foot rod (3), the lifting platform (12) can lift the lifting pressure rod (13) upward, so as to lift the siderest body (23) upward through the lifting pressure rod (13).

11. The edge-blocking assembly (1) according to claim 10, characterized in that, The main body (23) of the edge rest includes a connecting plate (231) and a foot (232). The connecting plate (231) is connected to the rotating shaft (22), the foot (232) is connected to the connecting plate (231), and the lifting pressure rod (13) is connected to the connecting plate (231).

12. The edge-blocking assembly (1) according to claim 11, characterized in that, The rotating shaft (22) is fixedly connected to the fixed base (21), and a fixed bracket (24) is fixedly connected to the end of the rotating shaft (22). The connecting plate (231) is rotatably connected to the rotating shaft (22). The edge-mounting assembly (1) also includes a spring (40) and a third adjusting screw (30). One end of the spring (40) is connected to the fixed bracket (24), and the other end of the spring (40) is connected to the connecting plate (231). The connecting plate (231) is provided with a third threaded hole. The third adjusting screw (30) cooperates with the third threaded hole and abuts against the fixed bracket (24).

13. The edge-blocking assembly (1) according to claim 10, characterized in that, The lifting platform (12) can be flipped relative to the connecting seat (11) so that the lifting platform (12) has a working position and a storage position that can be switched between each other; When the lifting platform (12) is in the working position, the lifting platform (12) can lift the lifting rod (13) upward during the process of the lifting device (10) rising. When the lifting platform (12) is in the storage position, the lifting platform (12) does not contact the lifting pressure rod (13) during the process of the lifting device (10) rising.

14. The edge-blocking assembly (1) according to claim 13, characterized in that, The lifting platform (12) is hinged to the connecting seat (11), and the lifting device (10) also includes a tension spring (14), one end of which is connected to the lifting platform (12), and the other end of which is connected to the connecting seat (11).

15. The edge-blocking assembly (1) according to claim 10, characterized in that, The lifting device (10) further includes a first adjusting screw (15), the lifting pressure rod (13) is provided with a first threaded hole, the first adjusting screw (15) cooperates with the first threaded hole, and the first adjusting screw (15) is used to abut against the lifting platform (12).

16. The edge-blocking assembly (1) according to claim 10, characterized in that, The lifting rod (13) has a first form and a second form that can be switched between each other; When the lifting rod (13) is in the first configuration, the lifting platform (12) can lift the lifting rod (13) upward during the process of the lifting device (10) rising. When the lifting rod (13) is in the second configuration, the lifting platform (12) does not contact the lifting rod (13) during the lifting process of the lifting device (10).

17. The edge-blocking assembly (1) according to claim 16, characterized in that, The lifting rod (13) includes a first section (132) and a second section (133). The first section (132) is connected to the side-mounted body (23), and the second section (133) is hinged to the first section (132) so that the second section (133) can move between an extended position and a retracted position in a flipping manner. When the second section (133) is in the extended position, the lifting rod (13) is in the first configuration; When the second section (133) is in the retracted position, the lifting rod (13) is in the second configuration.

18. The edge-blocking assembly (1) according to claim 17, characterized in that, The lifting device (10) further includes a second adjusting screw (16), the first section (132) is provided with a second threaded hole, the second adjusting screw (16) cooperates with the second threaded hole, and the second adjusting screw (16) is used to abut against the second section (133).

19. The edge-blocking assembly (1) according to claim 16, characterized in that, The lifting rod (13) is slidably engaged with the side-mounted body (23) so that the lifting rod (13) can move between a first position and a second position; When the lifting rod (13) is in the first position, the lifting rod (13) is in the first form; When the lifting rod (13) is in the second position, the lifting rod (13) is in the second form.

20. The edge-blocking assembly (1) according to any one of claims 10 to 19, characterized in that, The connecting seat (11) includes a first connecting part (111) and a second connecting part (112). The first connecting part (111) is connected to the presser foot rod (3), and the lifting platform (12) is connected to the second connecting part (112). One of the first connecting part (111) and the second connecting part (112) is provided with an adjustment hole (114), and the other of the first connecting part (111) and the second connecting part (112) is provided with a connection hole. The first connecting part (111) and the second connecting part (112) are connected by a fastener (113) passing through the adjustment hole (114) and the connection hole.

21. A sewing machine (100), characterized in that, It includes the lifting device (10) according to any one of claims 1 to 9, or the side-mounting assembly (1) according to any one of claims 10 to 20.

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