Adjustable quick-mounting support and sewing machine

Abstract

The utility model discloses an adjustable quick -mounting support and sewing machine, and the support includes clamping seat, adjusting stand and holding component, adjusting stand includes sleeve, Z axle adjusting lever and second positioning component, sleeve is installed on the clamping seat, and Z axle adjusting lever is arranged along Z axle and is slidably arranged on the sleeve, second positioning component is connected between sleeve and Z axle adjusting lever, and is used for limiting the sliding between Z axle adjusting lever and sleeve, holding component sets up at the lower extreme of clamping seat, and when the clamped piece extends into the clamping space, holding component can hold on the clamped piece, so that the clamping seat is clamped on the clamped piece, through the above -mentioned structure can adapt to the installation carrier of different thickness, width, and the universality of support is greatly promoted, and the purchase cost of multi -equipment adaptation is reduced, simultaneously, the sliding design of sleeve, Z axle adjusting lever and second positioning component provides the flexible and stable position adjusting ability for the thread cutting cutter head, effectively reduces the thread cutting not completely, fabric damage and other problems, and improves sewing processing precision.

Description

Technical Field

[0001] This utility model relates to the field of sewing equipment, and in particular to an adjustable quick-assembly bracket and a sewing machine. Background Technology

[0002] In the field of sewing equipment, the thread cutter head is a key component for achieving automatic thread cutting and improving sewing efficiency. The flexibility of its installation and position adjustment directly affects the compatibility and processing accuracy of the sewing machine. Currently, most mainstream thread cutter head brackets on the market adopt a fixed structure design, meaning the bracket is directly fixed to the sewing machine body using rigid connectors such as bolts. This design only adapts to specific sewing machine models or single processing scenarios, and this fixed structure has significant limitations: 1. Poor installation compatibility Because of the differences in the body structure of sewing machines of different brands and models (such as the thickness of the worktable, the height of the side protrusions, and the size of the reserved installation position), the fixed bracket cannot adapt to different "clamped parts" (such as the edge of the sewing machine worktable and the side beam of the machine body) by adjusting its own clamping method. This makes it difficult to reuse the same bracket on multiple sewing machines of different specifications, increasing the cost of equipment procurement and replacement.

[0003] 2. Insufficient position adjustment capability The optimal working position of the thread cutter head needs to be dynamically adjusted according to the thickness of the sewing fabric (such as thin yarn, thick canvas), the type of stitch (such as overlock, flat stitch), and the processing steps (such as starting and finishing). However, the fixed bracket can only determine the position of the thread cutter head during installation. It is not convenient to adjust its horizontal, vertical or front-back position during subsequent use, which can easily lead to problems such as incomplete thread cutting and fabric snagging, affecting the sewing quality.

[0004] Therefore, there is an urgent need for an adjustable quick-assembly bracket and sewing machine to solve the above problems. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an adjustable quick-release bracket and a sewing machine.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: an adjustable quick-release bracket, including a clamp, an adjustment frame and a support component; The clamping seat is provided with a clamping space with a side opening. The clamping seat includes an upper clamping plate, a lower clamping plate and a vertical plate. The vertical plate is connected between the upper clamping plate and the lower clamping plate and forms a U-shaped structure. The upper clamping plate, the lower clamping plate and the vertical plate enclose the clamping space. The abutment component is set on the lower clamping plate.

[0007] The adjustment frame includes a sleeve, a Z-axis adjusting rod, and a second positioning assembly. The sleeve is mounted on the clamp, the Z-axis adjusting rod is slidably mounted on the sleeve and arranged along the Z-axis, and the wire cutting head is mounted on the Z-axis adjusting rod. The second positioning assembly is connected between the sleeve and the Z-axis adjusting rod to limit the sliding between the Z-axis adjusting rod and the sleeve. The abutment component is located at the lower end of the clamp; The holding component can hold the clamped part against it when the clamped part is inserted into the clamping space, so that the clamping seat is clamped onto the clamped part.

[0008] As one of the preferred embodiments of this utility model, the adjusting frame also includes a slide block, a sleeve mounted on the slide block, a groove provided at the upper end of the clamp, the slide block being slidably disposed in the groove, and a first positioning component connected between the upper ends of the slide block and the clamp to restrict the sliding of the slide block in the groove.

[0009] As one of the preferred embodiments of the present invention, the first positioning component includes a first strip groove and a plurality of first bolts. The first strip groove is disposed on the clamp and arranged along the length direction of the slide groove. The lower end of the adjusting frame is provided with a plurality of first threaded holes. The first bolts pass through the first strip groove and are threadedly connected to the first threaded holes.

[0010] As one of the preferred embodiments of this utility model, an adjustable quick-release bracket also includes a Y-axis adjusting rod and a third positioning component; The Y-axis adjusting rod is slidably mounted on the Z-axis adjusting rod and arranged along the Y-axis; the wire cutting head is mounted on the Y-axis adjusting rod. The third positioning component is connected between the Z-axis adjusting rod and the Y-axis adjusting rod, and is used to limit the sliding between the Y-axis adjusting rod and the Z-axis adjusting rod.

[0011] As one of the preferred embodiments of this utility model, an adjustable quick-release bracket also includes an X-axis adjusting rod and a fourth positioning component; The X-axis adjusting rod is slidably mounted on the Y-axis adjusting rod and arranged along the X-axis; the wire cutting head is mounted on the X-axis adjusting rod. The fourth positioning component is connected between the Y-axis adjusting rod and the X-axis adjusting rod to limit the sliding between the X-axis adjusting rod and the Y-axis adjusting rod.

[0012] As one of the preferred embodiments of this utility model, the second positioning component includes a second strip groove and a plurality of second bolts. The second strip groove is disposed on the sleeve and arranged along the Z-axis. The lower end of the Z-axis adjusting rod is provided with a plurality of second threaded holes. The second bolts pass through the second strip groove and are threadedly connected to the second threaded holes.

[0013] As one of the preferred embodiments of this utility model, the third positioning component includes a first through hole, a third threaded hole, and a first screw. The first through hole is disposed on the Z-axis adjusting rod and extends along the Y-axis. The Y-axis adjusting rod passes through the first through hole. The third threaded hole is disposed on the Z-axis adjusting rod and communicates with the first through hole. The first screw is threadedly connected to the third threaded hole and abuts against the Y-axis adjusting rod.

[0014] As one of the preferred embodiments of this utility model, the fourth positioning component includes a second through hole, a fourth threaded hole, and a second screw. The second through hole is disposed on the Y-axis adjusting rod and extends along the X-axis. The X-axis adjusting rod passes through the second through hole. The fourth threaded hole is disposed on the Y-axis adjusting rod and communicates with the second through hole. The second screw is threadedly connected to the fourth threaded hole and abuts against the X-axis adjusting rod.

[0015] As one of the preferred embodiments of this utility model, the abutment assembly includes a knob, a screw and an abutment block. A fifth threaded hole is provided on the clamping seat. The knob is installed at one end of the screw, and the abutment block is installed at the other end of the screw and located in the clamping space. The screw is threadedly connected to the fifth threaded hole.

[0016] A sewing machine, including the aforementioned support frame.

[0017] The beneficial effects of this utility model are as follows: An adjustable quick-assembly bracket and sewing machine, the bracket includes a clamping seat, an adjusting frame, and a supporting component; the clamping seat is provided with a clamping space with a side opening; the adjusting frame includes a sleeve, a Z-axis adjusting rod, and a second positioning component, the sleeve is mounted on the clamping seat, the Z-axis adjusting rod is slidably mounted on the sleeve and arranged along the Z-axis, and the thread cutter head is mounted on the Z-axis adjusting rod; the second positioning component is connected between the sleeve and the Z-axis adjusting rod to limit the sliding between the Z-axis adjusting rod and the sleeve; the supporting component is located at the lower end of the clamping seat; the supporting component can abut against the clamped part when the clamped part is extended into the clamping space, so that the clamping seat is clamped on the clamped part; the above structure can adapt to mounting carriers of different thicknesses and widths, greatly improving the versatility of the bracket and reducing the procurement cost of adapting to multiple devices; at the same time, the sliding design of the sleeve, Z-axis adjusting rod, and second positioning component provides the thread cutter head with flexible and stable position adjustment capability, effectively reducing problems such as incomplete thread cutting and fabric damage, and improving sewing processing accuracy. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 An exploded view of an adjustable quick-release bracket; Figure 2 for Figure 1 A magnified view of a portion of region A in the middle; Figure 3 for Figure 1 A magnified view of a portion of region B in the middle. Detailed Implementation

[0019] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0020] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limitations on this utility model.

[0022] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figures 1-3 An adjustable quick-release bracket includes a clamp 100, an adjustment frame 200, a support component 300, and a first positioning component 400. The clamping base 100 is provided with a clamping space 100a with a side opening, and the upper end of the clamping base 100 is provided with a sliding groove 100b. The lower end of the adjusting frame 200 is slidably disposed in the slide groove 100b, and the wire cutter head is mounted on the upper end of the adjusting frame 200; The abutment component 300 is disposed at the lower end of the clamp 100; The first positioning component 400 is connected between the lower end of the adjusting frame 200 and the upper end of the clamp 100 to limit the sliding of the lower end of the adjusting frame 200 within the slide groove 100b. The holding component 300 can hold the clamped part against the clamped part when the clamped part is inserted into the clamping space 100a, so that the clamping seat 100 is clamped onto the clamped part.

[0024] In this invention, the multi-angle adjustment bracket is applied to a sewing machine. Specifically, it is installed on the sewing machine table. During use, the side opening of the clamping space 100a is aligned with the side of the machine table and inserted. After being pushed into place, the clamping seat 100 is clamped onto the machine table by operating the abutment component 300. Then, the lower end of the adjustment bracket 200 is inserted into the sliding groove 100b on the clamping seat 100 and connected and fixed by the first positioning component 400. Finally, the thread cutter head is installed on the adjustment bracket 200. At the top; when it is necessary to adjust the position of the wire cutter head, simply operate the first positioning component 400 to release the restriction on the adjustment frame 200, and slide the adjustment frame 200 in the slide groove 100b by moving it, thereby changing the relative position between the adjustment frame 200 and the clamp 100, and thus changing the position of the wire cutter head to meet the usage needs of different workers or different processes; it should be noted that the slide groove 100b is arranged along the length direction of the clamp 100, that is, arranged from the inside to the outside of the machine.

[0025] Reference Figures 1-2 In some embodiments, the clamping base 100 includes an upper clamping plate 110, a lower clamping plate 120, and a vertical plate 130. The vertical plate 130 is connected between the upper clamping plate 110 and the lower clamping plate 120 and forms a U-shaped structure. The upper clamping plate 110, the lower clamping plate 120, and the vertical plate 130 enclose a clamping space 100a. A sliding groove 100b is disposed on the upper clamping plate 110, and a retaining component 300 is disposed on the lower clamping plate 120. Specifically, the upper clamping plate 110, the lower clamping plate 120, and the vertical plate 130 are formed into an integral U-shaped structure by stamping, bending, and welding of metal sheets, thereby constructing the clamping space 100a and the sliding groove 100b. It should be noted that the sliding groove 100b is open at one end near the inner side of the machine tool, so that the lower end of the adjusting frame 200 can be inserted from this end opening. The end of the sliding groove 100b facing away from the inner side of the machine tool is at least partially closed, which can prevent the adjusting frame 200 from falling accidentally.

[0026] Reference Figures 1-2In some embodiments, the first positioning component 400 includes a first strip groove 410 and a plurality of first bolts 420. The first strip groove 410 is disposed on the clamp 100 and arranged along the length direction of the slide groove 100b. The lower end of the adjusting bracket 200 is provided with a plurality of first threaded holes 430. The first bolts 420 pass through the first strip groove 410 and are threadedly connected to the first threaded holes 430. Specifically, the first strip groove 410 is provided in a plurality of pairs, and the two first strip grooves 410 in the same pair are divided into... On both sides of the slide 100b, multiple sets of first strip grooves 410 are arranged along the length of the slide 100b. The multiple sets of first strip grooves 410 can be connected or set independently. When set independently, they can improve the structural strength of the clamp 100 (upper clamp plate 110). Furthermore, four first threaded holes 430 are evenly distributed at the four corners of the lower end of the adjusting frame 200. Four first bolts 420 are set and correspond one-to-one with the four first threaded holes 430, which can firmly connect the adjusting frame 200 and the clamp 100 together.

[0027] Reference Figures 1-2 In some embodiments, the adjusting frame 200 includes a slide 210, a sleeve 220, a Z-axis adjusting rod 230, and a second positioning assembly 240; the slide 210 is slidably disposed within the slide groove 100b; the sleeve 220 is mounted on the slide 210; the Z-axis adjusting rod 230 is slidably disposed on the sleeve 220 and arranged along the Z-axis, and a wire cutter head is mounted on the Z-axis adjusting rod 230; the second positioning assembly 240 is connected between the sleeve 220 and the Z-axis adjusting rod 230 to limit the sliding between the Z-axis adjusting rod 230 and the sleeve 220; in a further embodiment, the second positioning assembly 240 includes a second strip groove 241 and a plurality of second bolts 242, the second strip groove 241 is disposed on the sleeve 220 and arranged along the Z-axis, the lower end of the Z-axis adjusting rod 230 is provided with a plurality of second threaded holes 243, and the second bolts 242 pass through the second strip groove 241 and are threadedly connected to the second threaded holes 243.

[0028] Specifically, when it is necessary to adjust the wire cutter head in the Z-axis direction (height), use a tool to loosen the second bolt 242, so that the Z-axis adjusting rod 230 can slide within the sleeve 220, thereby changing the relative height between the Z-axis adjusting rod 230 and the sleeve 220, that is, changing the height of the wire cutter head to meet the usage needs of different workers or different processes; when the required height is reached, use a tool to tighten the second bolt 242 again, so that the Z-axis adjusting rod 230 is restricted within the sleeve 220, thereby locking the height.

[0029] Reference Figures 1-3In some embodiments, an adjustable quick-release bracket further includes a Y-axis adjusting rod 250 and a third positioning component 260; the Y-axis adjusting rod 250 is slidably disposed on the Z-axis adjusting rod 230 and arranged along the Y-axis, and a wire cutter head is mounted on the Y-axis adjusting rod 250; the third positioning component 260 is connected between the Z-axis adjusting rod 230 and the Y-axis adjusting rod 250 to limit the sliding between the Y-axis adjusting rod 250 and the Z-axis adjusting rod 230; in a further embodiment, the third positioning component 260 includes a first through hole 261, a third threaded hole 262 and a first screw 263, the first through hole 261 is disposed on the Z-axis adjusting rod 230 and extends along the Y-axis, the Y-axis adjusting rod 250 passes through the first through hole 261, the third threaded hole 262 is disposed on the Z-axis adjusting rod 230 and communicates with the first through hole 261, and the first screw 263 is threadedly connected to the third threaded hole 262 and abuts against the Y-axis adjusting rod 250.

[0030] Specifically, when it is necessary to adjust the wire cutter head in the Y-axis direction, use a tool to loosen the first few-meter screw 263, so that the Y-axis adjusting rod 250 can slide within the first through hole 261, thereby changing the relative position between the Y-axis adjusting rod 250 and the Z-axis adjusting rod 230 to meet the usage needs of different workers or different processes; when adjusted to the required position, use a tool to tighten the first few-meter screw 263 again, so that the Y-axis adjusting rod 250 is restricted within the first through hole 261, thereby locking the position in the Y-axis direction.

[0031] Reference Figures 1-3 In some embodiments, an adjustable quick-release bracket further includes an X-axis adjusting rod 270 and a fourth positioning component 280; the X-axis adjusting rod 270 is slidably disposed on the Y-axis adjusting rod 250 and arranged along the X-axis, and a wire cutter head is mounted on the X-axis adjusting rod 270; the fourth positioning component 280 is connected between the Y-axis adjusting rod 250 and the X-axis adjusting rod 270 to limit the sliding between the X-axis adjusting rod 270 and the Y-axis adjusting rod 250; in a further embodiment, the fourth positioning component 280 includes a second through hole 281, a fourth threaded hole, and a second screw 283; the second through hole 281 is disposed on the Y-axis adjusting rod 250 and extends along the X-axis, the X-axis adjusting rod 270 passes through the second through hole 281, the fourth threaded hole is disposed on the Y-axis adjusting rod 250 and communicates with the second through hole 281, and the second screw 283 is threadedly connected to the fourth threaded hole and abuts against the X-axis adjusting rod 270.

[0032] Specifically, when the wire cutter head needs to be adjusted in the X-axis direction, the second screw 283 is loosened using a tool, allowing the X-axis adjusting rod 270 to slide within the second through hole 281, thereby changing the relative position between the X-axis adjusting rod 270 and the Y-axis adjusting rod 250 to meet the needs of different workers or different processes. When the desired height is reached, the second screw 283 is tightened again using a tool, restricting the X-axis adjusting rod 270 within the second through hole 281, thus locking the position in the X-axis direction. It should be noted that the Z-axis adjusting rod 230, the second positioning component 240, the Y-axis adjusting rod 250, the third positioning component 260, the X-axis adjusting rod 270, and the fourth positioning component 280 can be used in conjunction with each other to achieve three-dimensional adjustment of the wire cutter head position, further improving the flexibility of the wire cutter head position adjustment and meeting usage requirements.

[0033] Reference Figure 1 In some embodiments, the abutment assembly 300 includes a knob 310, a screw 320, and an abutment block 330. The clamping base 100 has a fifth threaded hole 340. The knob 310 is mounted on one end of the screw 320, and the abutment block 330 is mounted on the other end of the screw 320 and located within the clamping space 100a. The screw 320 is threaded into the fifth threaded hole 340. Specifically, the abutment assembly 300 is preferably configured in two sets along the length of the clamping base 100 (lower clamping plate 120). The arrangement provides better clamping force. Furthermore, when the knob 310 is rotated in the forward direction, the screw 320 will rotate in the forward direction within the fifth threaded hole 340, thereby driving the abutment block 330 to gradually approach the lower end face of the machine tool until it abuts against the lower end face of the machine tool, completing the clamping. When the knob 310 is rotated in the reverse direction, the screw 320 will rotate in the reverse direction within the fifth threaded hole 340, thereby driving the abutment block 330 to gradually move away from the lower end face of the machine tool until it separates from the lower end face of the machine tool.

[0034] A sewing machine, including the aforementioned support frame.

[0035] One advantage of this invention is that the structure described above can be adapted to mounting carriers of different thicknesses and widths, greatly improving the versatility of the bracket and reducing the procurement cost of adapting to multiple devices. At the same time, the sliding design of the sleeve, Z-axis adjusting rod, and second positioning component provides the thread cutter head with flexible and stable position adjustment capability, effectively reducing problems such as incomplete thread cutting and fabric damage, and improving sewing processing accuracy.

[0036] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. An adjustable quick-release bracket, characterized in that: Includes a clamp (100), an adjustment bracket (200), and a support assembly (300); The clamping base (100) is provided with a clamping space (100a) with a side opening. The clamping base (100) includes an upper clamping plate (110), a lower clamping plate (120) and a vertical plate (130). The vertical plate (130) is connected between the upper clamping plate (110) and the lower clamping plate (120) and forms a U-shaped structure. The upper clamping plate (110), the lower clamping plate (120) and the vertical plate (130) enclose the clamping space (100a). The abutment component (300) is provided on the lower clamping plate (120). The adjusting frame (200) includes a sleeve (220), a Z-axis adjusting rod (230), and a second positioning assembly (240). The sleeve (220) is mounted on the clamp (100). The Z-axis adjusting rod (230) is slidably disposed on the sleeve (220) and arranged along the Z-axis. The wire cutting head is mounted on the Z-axis adjusting rod (230). The second positioning assembly (240) is connected between the sleeve (220) and the Z-axis adjusting rod (230) to limit the sliding between the Z-axis adjusting rod (230) and the sleeve (220). The abutment component (300) is disposed at the lower end of the clamp (100); The abutting component (300) can abut against the clamped member when the clamped member extends into the clamping space (100a) so that the clamping seat (100) is clamped onto the clamped member.

2. The adjustable quick-release bracket according to claim 1, characterized in that: The adjusting frame (200) also includes a slide (210), the sleeve (220) is mounted on the slide (210), the upper end of the clamp (100) is provided with a slide groove (100b), the slide (210) is slidably disposed in the slide groove (100b), and also includes a first positioning component (400) connected between the upper end of the slide (210) and the clamp (100) for limiting the sliding of the slide (210) in the slide groove (100b).

3. An adjustable quick-release bracket according to claim 2, characterized in that: The first positioning component (400) includes a first strip groove (410) and a plurality of first bolts (420). The first strip groove (410) is disposed on the clamp (100) and arranged along the length direction of the slide (100b). The lower end of the adjusting frame (200) is provided with a plurality of first threaded holes (430). The first bolts (420) pass through the first strip groove (410) and are threadedly connected to the first threaded holes (430).

4. The adjustable quick-release bracket according to claim 1, characterized in that: It also includes a Y-axis adjusting rod (250) and a third positioning assembly (260); The Y-axis adjusting rod (250) is slidably mounted on the Z-axis adjusting rod (230) and arranged along the Y-axis, and the wire cutting head is mounted on the Y-axis adjusting rod (250); The third positioning component (260) is connected between the Z-axis adjusting rod (230) and the Y-axis adjusting rod (250) to limit the sliding between the Y-axis adjusting rod (250) and the Z-axis adjusting rod (230).

5. An adjustable quick-release bracket according to claim 4, characterized in that: It also includes an X-axis adjusting rod (270) and a fourth positioning assembly (280); The X-axis adjusting rod (270) is slidably disposed on the Y-axis adjusting rod (250) and arranged along the X-axis, and the wire cutting head is mounted on the X-axis adjusting rod (270); The fourth positioning component (280) is connected between the Y-axis adjusting rod (250) and the X-axis adjusting rod (270) to limit the sliding between the X-axis adjusting rod (270) and the Y-axis adjusting rod (250).

6. An adjustable quick-release bracket according to any one of claims 1, 4, and 5, characterized in that: The second positioning component (240) includes a second slot (241) and a plurality of second bolts (242). The second slot (241) is disposed on the sleeve (220) and arranged along the Z-axis. The lower end of the Z-axis adjusting rod (230) is provided with a plurality of second threaded holes (243). The second bolts (242) pass through the second slot (241) and are threadedly connected to the second threaded holes (243).

7. An adjustable quick-release bracket according to any one of claims 4-5, characterized in that: The third positioning component (260) includes a first through hole (261), a third threaded hole (262), and a first screw (263). The first through hole (261) is disposed on the Z-axis adjusting rod (230) and extends along the Y-axis. The Y-axis adjusting rod (250) passes through the first through hole (261). The third threaded hole (262) is disposed on the Z-axis adjusting rod (230) and communicates with the first through hole (261). The first screw (263) is threaded into the third threaded hole (262) and abuts against the Y-axis adjusting rod (250).

8. An adjustable quick-release bracket according to claim 5, characterized in that: The fourth positioning component (280) includes a second through hole (281), a fourth threaded hole, and a second screw (283). The second through hole (281) is disposed on the Y-axis adjusting rod (250) and passes through the X-axis. The X-axis adjusting rod (270) passes through the second through hole (281). The fourth threaded hole is disposed on the Y-axis adjusting rod (250) and communicates with the second through hole (281). The second screw (283) is threaded into the fourth threaded hole and abuts against the X-axis adjusting rod (270).

9. An adjustable quick-release bracket according to claim 1, characterized in that: The holding assembly (300) includes a knob (310), a screw (320) and an abutment block (330). The clamp (100) is provided with a fifth threaded hole (340). The knob (310) is installed at one end of the screw (320), and the abutment block (330) is installed at the other end of the screw (320) and located in the clamping space (100a). The screw (320) is threaded into the fifth threaded hole (340).

10. A sewing machine, characterized in that: Includes the stent as described in any one of claims 1-9.

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