A face-cutting mechanism and a buttonhole machine

Abstract

This utility model discloses a fabric shearing mechanism and a buttonhole machine, relating to the field of buttonhole machines. The fabric shearing mechanism includes a support, a scissor frame, and a mounting frame. The scissor frame is mounted on the support and has a fixed blade. The mounting frame has an adjustment seat with an eccentric structure. The eccentric structure includes a first end threadedly connected to the adjustment seat and a second end eccentrically mounted on the scissor frame. The first end rotates to cause the scissor frame to swing up and down. This application achieves height adjustment of the scissor frame within a certain range by rotating the first end of the eccentric structure, thereby causing the second end to swing. This allows for height adjustment of the fixed blade located on the scissor frame. This adjustment method is not affected by the gap between the fixed blade and the guide shaft, breaking through the height limitations of the original adjustment method, adapting to fabrics of different thicknesses, meeting the needs of multi-layer sewing, avoiding the problem of the fixed blade hitting the presser foot, reducing cumbersome operation steps, and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of buttonhole machine technology, and more specifically, to a face-cutting mechanism and a buttonhole machine. Background Technology

[0002] In the modern garment manufacturing industry, computerized buttonhole machines are a key piece of equipment, and their technological advancements have greatly promoted the automation and efficiency of garment production. They can complete the buttonhole process quickly and accurately, reducing errors and time costs associated with manual operation and improving overall production efficiency.

[0003] In addressing the issue of shears' cutting thickness when handling thick materials in computerized buttonhole machines, existing technologies primarily rely on adjusting mounting screws to control the shear height. However, there's a height limitation between the upper shearing blade and the guide pin, limiting the adjustable height. This leads to the shears colliding with the presser foot when cutting thicker fabrics. When sewing thicker materials, the shears easily collide with the presser foot and frame during thread cutting, causing interference and resulting in error codes on the user interface. This leads to a poor user experience and fails to meet the diverse sewing needs of varying fabric thicknesses in actual production.

[0004] In summary, how to effectively improve the adjustment range of the fixed blade without being affected by the guide pin, and improve the thickness cutting capability of the face shear, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a dough cutting mechanism and a buttonhole machine, which effectively improves the adjustment range of the fixed blade while being unaffected by the guide pin, thereby improving the dough cutting thickness.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A dough cutting mechanism and a buttonhole machine, comprising:

[0008] support;

[0009] A scissor holder is mounted on the bracket, and a fixed blade is mounted on the scissor holder;

[0010] Mounting frame, wherein the mounting frame is provided with an adjustment seat, and the adjustment seat is provided with an eccentric structure;

[0011] The eccentric structure includes a first end threadedly connected to the adjusting seat and a second end eccentrically disposed on the scissor frame, so that the first end rotates to drive the scissor frame to swing up and down.

[0012] Preferably, both the first end and the second end are columnar structures. The surface of the first end is threaded and threadedly connected to the adjusting seat. The surface of the second end is smooth. A through groove is provided on the scissor bracket, and the second end is rotatably disposed in the through groove.

[0013] Preferably, the eccentric structure includes a limiting shaft, with the first end and the second end respectively disposed on both sides of the limiting shaft.

[0014] Preferably, a limiting surface is formed on the side of the limiting shaft near the scissor bracket, and the limiting surface abuts against the surface of the scissor bracket.

[0015] Preferably, the outer peripheral surface of the first end and / or the second end is provided with angle scale and height scale.

[0016] Preferably, an adjustment structure is provided between the adjustment seat and the mounting bracket, the adjustment structure being used to adjust the relative position of the adjustment seat and the mounting bracket.

[0017] Preferably, the adjustment structure includes a groove formed on the surface of the mounting frame, an adjustment column is provided on one side of the adjustment seat, a roller that cooperates with the groove is provided on the adjustment column so that the roller slides along the groove, and a fixing structure is provided between the adjustment seat and the mounting frame so that the adjustment seat is limited and fixed on the mounting frame.

[0018] Preferably, the fixing structure includes a plurality of first threaded holes formed on one side of the mounting bracket along the extension direction of the slide groove, and a second threaded hole formed on the adjusting seat that mates with the first threaded holes. The second threaded hole and the corresponding first threaded hole are fixed together by a limiting bolt.

[0019] Preferably, it also includes a pressure foot, and there is a height difference of 0.5mm between the lowest point of the fixed blade and the pressure foot. The height range of the scissor holder adjusted by the eccentric structure is 5mm to 8mm.

[0020] A buttonhole machine includes a face-cutting mechanism, wherein the face-cutting mechanism is the face-cutting mechanism described above.

[0021] The fabric shearing mechanism and buttonhole machine provided by this utility model rotate the first end of the eccentric structure, thereby driving the second end of the eccentric structure to swing, which in turn drives the scissor frame connected to the second end to adjust its height within a certain range. This achieves height adjustment of the fixed blade located on the scissor frame. Since the adjustment is essentially an adjustment of the scissor frame, and the guide shaft and the fixed blade are both located on the scissor frame, this adjustment method is not affected by the gap distance between the fixed blade and the guide shaft. It also achieves rapid adjustment of the fixed blade height, breaking through the height limitations of the original adjustment method, adapting to fabrics of different thicknesses, meeting the needs of multi-layer sewing, avoiding the problem of the fixed blade hitting the presser foot, reducing cumbersome operation steps, and improving work efficiency.

[0022] The further solutions provided in this application can also achieve the following beneficial technical effects:

[0023] By utilizing the limiting surface and the threaded connection at the first end, the horizontal position of the fixed blade can be finely adjusted while the height is being adjusted, thereby improving the performance of the scissors at the start of the next sewing session. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the face shearing mechanism in this embodiment;

[0026] Figure 2 This is a side view of the face shearing mechanism in this embodiment;

[0027] Figure 3 This is a schematic diagram of the eccentric structure in this embodiment;

[0028] Figure 4 This is a schematic diagram illustrating how the fixed blade height adjustment changes with the angle in this embodiment.

[0029] Figures 1-4 The reference numerals in the attached figures include:

[0030] 1. Bracket; 2. Scissor bracket; 3. Presser foot; 4. Fixed blade; 5. Mounting bracket; 6. Adjusting seat; 7. First end; 8. Second end; 9. Through groove; 10. Limiting shaft; 11. Slide groove; 12. Adjusting column; 13. Roller. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. This application discloses a face-cutting mechanism and a buttonhole machine.

[0033] The core of this utility model is to provide a face-cutting mechanism.

[0034] Another core aspect of this invention is providing a buttonhole machine.

[0035] Please refer to Figure 1 .

[0036] The face shearing mechanism provided by this utility model includes a support 1, a shear frame 2, and a mounting frame 5. The shear frame 2 is mounted on the support 1 and has a fixed blade 4. The mounting frame 5 is equipped with an adjustment seat 6 and an eccentric structure. The eccentric structure includes a first end 7 that is threadedly connected to the adjustment seat 6 and a second end 8 that is eccentrically mounted on the shear frame 2, so that the first end 7 rotates to drive the shear frame 2 to swing up and down.

[0037] Specifically, bracket 1 and mounting frame 5 are arranged opposite each other. Scissor frame 2, fixed blade 4, adjusting seat 6, and eccentric structure are all located between bracket 1 and mounting frame 5. Scissor frame 2 is located on one side of bracket 1 and connected via a guide post. The fixed blade is located at the bottom of the side of scissor frame 2 facing away from bracket 1. Adjusting seat 6 is located on the side of mounting frame 5 closest to bracket 1. An eccentric structure is provided between adjusting seat 6 and scissor frame 2. This eccentric structure, through its eccentric setting, allows scissor frame 2, connected to the eccentric end of the eccentric structure, to swing within a certain height range during adjustment.

[0038] Furthermore, the eccentric structure has two ends, namely the first end 7 and the second end 8. The first end 7 is rotatably connected to the adjusting seat 6, and the second end 8 is rotatably disposed on the scissor frame 2. The second end 8 is eccentrically set. Since the second end 8 is eccentrically set, the connection between the scissor frame 2 and the second end 8 can be a structure with a left and right swing range, similar to a waist-shaped hole.

[0039] It should be noted that the structure of this application can be used in conjunction with the screw adjustment method in the prior art. The two methods can be combined, first using screws for adjustment, and then using the eccentric structure for adjustment, to further improve the adaptability and adjustment range of the device.

[0040] The aforementioned shearing mechanism and buttonhole machine effectively solve the problems of limited adjustable height in existing technologies. Furthermore, when sewing thicker fabrics, the scissors are prone to colliding with the presser foot and frame during thread cutting, causing interference and resulting in error codes on the user interface, leading to a poor user experience. When the height of the fixed blade 4 needs adjustment, rotating the first end 7 causes the second end 8 to swing, which in turn causes the scissor holder 2 connected to the second end 8 to swing within a certain height range (as shown in the attached diagram). Figure 4 As shown in the figure, this will cause the fixed blade located on the scissor holder 2 to adjust its height.

[0041] The face-cutting mechanism provided by this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0042] In one specific implementation, reference is made to... Figure 2 and Figure 3 Both the first end 7 and the second end 8 are columnar structures. The surface of the first end 7 is threaded and threadedly connected to the adjusting seat 6. The surface of the second end 8 is smooth. A through groove 9 is provided on the scissor bracket 2, and the second end 8 is rotatably arranged in the through groove 9.

[0043] Specifically, both the first end 7 and the second end 8 are cylindrical structures, extending towards the adjusting seat 6 and the scissor bracket 2 respectively. Correspondingly, a threaded hole is formed on the adjusting seat 6 at a position opposite to the first end 7. The surface of the first end 7 is provided with threads that mate with the threaded hole, allowing the first end 7 to be screwed into the threaded hole. The scissor bracket 2 has a through groove 9 that mates with the second end 8, and the second end 8 is rotatably disposed within the through groove 9. Figure 2 As shown, one end of the through groove 9 has an opening, which facilitates the removal of the eccentric structure from the through groove 9. During the process of adjusting the height of the scissor frame 2 through the eccentric structure, the first end 7 is rotated to drive the second end 8 to rotate. The vertical swing of the second end 8 in the through groove 9 realizes the adjustment of the height of the scissor frame 2.

[0044] Based on any of the above embodiments, refer to Figure 2and Figure 3 The eccentric structure includes a limiting shaft 10, with a first end 7 and a second end 8 respectively disposed on both sides of the limiting shaft 10. A limiting surface is formed on the side of the limiting shaft 10 near the scissor frame 2, and the limiting surface abuts against the surface of the scissor frame 2.

[0045] Specifically, the first end 7 and the second end 8 are located on both sides of the limiting shaft 10 and extend away from the limiting shaft 10. The limiting shaft 10 has a limiting surface on the side closer to the scissor holder 2. The limiting surface abuts against the surface of the scissor holder 2. During the rotation of the first end 7 in the threaded hole, the limiting shaft 10 will swing horizontally along with the rotation of the first end 7, thereby causing the scissor holder 2 to swing horizontally. This effectively increases the clamping force of the scissors after cutting the wire and allows for slight adjustment of the scissor holder 2 in the horizontal position.

[0046] Based on any of the above embodiments, the outer peripheral surfaces of the first end 7 and / or the second end 8 are provided with angle scales and height scales.

[0047] Specifically, angle and height scales are simultaneously provided on the outer peripheral surface of the first end 7, the second end 8, or both. These scales help operators accurately adjust the height of the scissors, improving adjustment precision. Operators can determine the rotation angle of the eccentric structure based on the scales, thereby achieving precise height adjustment.

[0048] In a specific embodiment provided in this application, an adjustment structure is provided between the adjustment seat 6 and the mounting bracket 5, and the adjustment structure is used to adjust the relative position of the adjustment seat 6 and the mounting bracket 5.

[0049] Furthermore, the adjustment structure includes a slide groove 11 formed on the surface of the mounting frame 5, an adjustment column 12 is provided on one side of the adjustment seat 6, and a roller 13 that cooperates with the slide groove 11 is provided on the adjustment column 12 so that the roller 13 slides along the slide groove 11. A fixing structure is provided between the adjustment seat 6 and the mounting frame 5 so that the adjustment seat 6 is limited and fixed on the mounting frame 5.

[0050] Specifically, the adjustment structure includes a groove 11 formed on the surface of the mounting bracket 5, an adjustment column 12 on one side of the adjustment seat 6, and a roller 13 on the adjustment column 12 that cooperates with the groove 11, allowing the roller 13 to slide along the groove 11. A fixing structure is provided between the adjustment seat 6 and the mounting bracket 5 to limit and fix the adjustment seat 6 to the mounting bracket 5. The groove 11 can be a dovetail groove or a T-groove, etc., allowing the roller 13 to slide smoothly within the groove 11. The adjustment column 12 can be fixed to the adjustment seat 6 by bolts or welding, and the roller 13 is connected to the adjustment column 12 via a shaft.

[0051] Furthermore, the fixing structure includes a plurality of first threaded holes opened on one side of the mounting bracket 5 along the extension direction of the slide groove 11, and a second threaded hole opened on the adjusting seat 6 that mates with the first threaded holes. The second threaded hole and the corresponding first threaded hole are fixed by a limiting bolt. By adjusting the relative position of the adjusting seat and the mounting bracket, the position of the scissors can be further optimized to adapt to different sewing needs.

[0052] In a specific embodiment provided in this application, a presser foot 3 is also included. The lowest point of the fixed blade 4 has a height difference of 0.5 mm with the presser foot 3. The height range of the scissor holder 2, which is adjusted by the eccentric structure, is 5 mm to 8 mm.

[0053] Specifically, the fabric shearing mechanism also includes a presser foot 3. There is a 0.5mm height difference between the lowest point of the fixed blade and the presser foot. The height of the scissor holder 2, adjusted by an eccentric structure, ranges from 5mm to 8mm, preferably 6mm. The presser foot 3 holds the fabric down during sewing, ensuring sewing stability. The height difference between the fixed blade 4 and the presser foot 3 prevents the fixed blade 4 from hitting the presser foot 3 during thread cutting, while the height adjustment range of the eccentric structure can meet the sewing needs of fabrics of different thicknesses.

[0054] The implementation principle of the fabric shearing mechanism and buttonhole machine in this application embodiment is as follows: By rotating the first end 7 of the eccentric structure, utilizing its threaded connection with the adjusting seat 6 and the eccentric design of the second end 8, the scissor holder 2 is driven to swing up and down, thereby achieving rapid adjustment of the height of the fixed blade 4. Simultaneously, the limiting shaft 10 and the limiting surface can fine-tune the position of the fixed blade 4 and the thread clamping force. The adjustment structure can further optimize the relative position of the adjusting seat 6 and the mounting frame 5. This structure breaks through the height limitations of traditional adjustment methods, can adapt to fabrics of different thicknesses, avoids the problem of scissors hitting the presser foot 3, improves sewing quality and efficiency, enhances the stability and adaptability of the equipment, and compared to the traditional manual adjustment method, operation is simpler and faster, reduces manual intervention, and improves the automation level of the equipment.

[0055] In some other embodiments, the eccentric structure can be replaced by a cam structure. The cam structure includes a central shaft rotatably connected to the adjustment seat and a cam body with a curved profile that contacts the scissor holder. When the central shaft rotates, the curved profile of the cam body pushes the scissor holder up and down, thereby adjusting the fixed blade height.

[0056] The central shaft of the cam structure can be rotatably connected to the adjusting seat via bearings to reduce rotational resistance. The curve profile of the cam body can be designed according to actual needs to achieve different height adjustment ranges and adjustment accuracies.

[0057] In some other embodiments, the eccentric structure can also be adjusted by gears. By adding a gear transmission mechanism to the scissor holder 2, the fixed blade 4 can be moved up and down by rotating the gear.

[0058] In other embodiments, an automated adjustment system can be introduced, which, in conjunction with sensors detecting fabric thickness, automatically adjusts the height of the fixed blade 4. For example, a thickness sensor is installed below the presser foot 3 to detect the fabric thickness in real time and feed it back to the control system. Based on the detection data, the control system automatically adjusts the fixed blade height by driving a motor-driven mechanism (such as an eccentric pin or other mechanical structure).

[0059] At the same time, a secondary adjustment mechanism (such as a slide rail or telescopic rod) is added to the eccentric structure to further expand the adjustment range of the scissor height.

[0060] The buttonhole machine provided in this application includes a face-cutting mechanism, which is the face-cutting mechanism described above. Other structures of the buttonhole machine can be referred to in the prior art, and will not be described in detail here.

[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0062] The foregoing has provided a detailed description of the face-cutting mechanism and buttonhole machine provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A face-cutting mechanism, characterized in that, include: Support (1); A scissor holder (2) is mounted on the support (1), and a fixed blade (4) is mounted on the scissor holder (2). Mounting bracket (5), wherein an adjustment seat (6) is provided on the mounting bracket (5), and an eccentric structure is provided on the adjustment seat (6); The eccentric structure includes a first end (7) rotatably connected to the adjusting seat (6) and a second end (8) eccentrically disposed on the scissor frame (2), so that the first end (7) rotates to drive the scissor frame (2) to swing up and down.

2. The face shearing mechanism according to claim 1, characterized in that, Both the first end (7) and the second end (8) are columnar structures. The surface of the first end (7) is threaded and threadedly connected to the adjusting seat (6). The surface of the second end (8) is smooth. A through groove (9) is provided on the scissor frame (2), and the second end (8) is rotatably arranged in the through groove (9).

3. The face shearing mechanism according to claim 2, characterized in that, The eccentric structure includes a limiting shaft (10), with the first end (7) and the second end (8) respectively disposed on both sides of the limiting shaft (10).

4. The face shearing mechanism according to claim 3, characterized in that, The limiting shaft (10) forms a limiting surface on the side near the scissor frame (2), and the limiting surface abuts against the surface of the scissor frame (2).

5. The face shearing mechanism according to claim 1, characterized in that, The outer peripheral surfaces of the first end (7) and / or the second end (8) are provided with angle scales and height scales.

6. The face shearing mechanism according to claim 1, characterized in that, An adjustment structure is provided between the adjustment seat (6) and the mounting bracket (5), and the adjustment structure is used to adjust the relative position of the adjustment seat (6) and the mounting bracket (5).

7. The face shearing mechanism according to claim 6, characterized in that, The adjustment structure includes a groove (11) formed on the surface of the mounting frame (5), an adjustment column (12) is provided on one side of the adjustment seat (6), and a roller (13) that cooperates with the groove (11) is provided on the adjustment column (12) so that the roller (13) slides along the groove (11). A fixing structure is provided between the adjustment seat (6) and the mounting frame (5) so that the adjustment seat (6) is limited and fixed on the mounting frame (5).

8. The face shearing mechanism according to claim 7, characterized in that, The fixing structure includes a plurality of first threaded holes opened on one side of the mounting bracket (5) along the extension direction of the slide groove (11) and a second threaded hole opened on the adjusting seat (6) that mates with the first threaded holes. The second threaded hole and the corresponding first threaded hole are fixed together by a limiting bolt.

9. The face shearing mechanism according to any one of claims 1-8, characterized in that, It also includes a presser foot (3), and there is a height difference of 0.5 mm between the lowest point of the fixed blade (4) and the presser foot (3). The height range of the scissor holder (2) adjusted by the eccentric structure is 5 mm to 8 mm.

10. A buttonhole machine, comprising a sheet-cutting mechanism, characterized in that, The face-cutting mechanism is the face-cutting mechanism as described in any one of claims 1-9.

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