Cloth pressing assembly for sewing machine
By combining a frustum-shaped pressure roller with an anti-slip texture, the problem of fabric shifting during curved sewing using traditional pressure rollers is solved, achieving high-precision and efficient sewing results while reducing maintenance costs.
Patent Information
- Application Number
- CN202423097920.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Traditional flat roller designs are difficult to adapt to sewing tasks with many curves or turns, causing fabric to shift, wrinkle, or jam during sewing, affecting sewing accuracy and efficiency.
The pressure roller adopts a frustum-shaped structure, combined with anti-slip texture, movable block and threaded shaft adjustment mechanism. Through the cooperation of bracket and slide groove, the pressure roller can be flexibly adjusted and stably connected. The modular design of splicing roller is easy to maintain.
It improves sewing precision and efficiency, prevents fabric shifting and wrinkling, adapts to fabrics of different thicknesses and materials, reduces maintenance costs and replacement difficulty, and enhances the stability and durability of the pressure roller.
Smart Images
Figure CN223852942U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewing machine technical field, concretely relates to a cloth pressure assembly for sewing machine. BACKGROUND
[0002] In the traditional sewing machine technical field, cloth pressure assembly usually adopts plane pressure wheel or simple roller design to realize the fixed and guiding of cloth in the sewing process. However, this design has certain limitations in practical application. Especially in the processing of curve or more turning sewing task, the plane pressure wheel is often difficult to adapt to the bending change of cloth, leading to the problems such as cloth deviation, wrinkle or even carding in the sewing process, which seriously affects the precision and efficiency of sewing.
[0003] With the continuous progress of sewing machine technology and the increasing requirement of users on sewing quality, the traditional plane pressure wheel design has gradually been difficult to meet the demand of modern sewing process. Especially in the occasion of the be-shaped machine or the need to frequently carry out curve sewing, the traditional pressure wheel design is even more inadequate. SUMMARY
[0004] The utility model aims at providing a cloth pressure assembly for sewing machine to solve the problem that the plane pressure wheel is often difficult to adapt to the bending change of cloth in the processing of curve or more turning sewing task, leading to the problems such as cloth deviation, wrinkle or even carding in the sewing process, which seriously affects the precision and efficiency of sewing.
[0005] To achieve the above purpose, the utility model provides a cloth pressure assembly for sewing machine, which comprises a pressure wheel, a cloth platform is arranged below the pressure wheel, the pressure wheel is supported and fixed through a support at one side shaft center, the pressure wheel is arranged obliquely, the pressure wheel is a circular truncated cone structure, a sliding groove is arranged on one side of the support close to the pressure wheel, a movable block is arranged in the sliding groove, a threaded shaft is connected to the outside of the movable block, and the outer end of the threaded shaft is rotationally connected to the shaft center of the pressure wheel through a bearing.
[0006] Preferably, the outer wall of the pressure wheel is provided with anti-skid lines.
[0007] Preferably, a spring is installed on the top of the movable block.
[0008] Preferably, the movable block and the sliding groove are vertically slidingly matched, and the width of the movable block is greater than the width of the opening of the sliding groove.
[0009] Preferably, the threaded shaft is provided with a limiting nut on the outside close to the support.
[0010] As preferred, the pressing wheel is composed of several spliced wheels, the middle part of the spliced wheel is provided with a connecting shaft, one end of the connecting shaft is provided with a limiting ring, and the other end is provided with a locking nut.
[0011] As preferred, one side of the spliced wheel is provided with a protrusion, and the other side is provided with a groove, the protrusion and the groove are matched.
[0012] As preferred, the limiting nut is matched with the outer surface of the bracket.
[0013] Compared with the prior art, the utility model has the advantages of:
[0014] The pressing wheel with the circular table structure in the fabric pressing assembly for the sewing machine not only increases the contact area with the fabric, but also enables the fabric to turn more smoothly in the sewing process due to the round shape, thereby greatly improving the sewing precision and efficiency. This design is particularly suitable for beehive-shaped machines or occasions requiring frequent curve sewing, effectively avoiding the occurrence of problems such as fabric deviation, wrinkling or jamming.
[0015] The anti-skid lines installed on the outer wall of the pressing wheel increase the friction between the pressing wheel and the fabric, so that the fabric is more stable and less likely to slide during the sewing process, further improving the sewing precision and stability.
[0016] Through the design of the groove, movable block and threaded shaft on the bracket, the position of the pressing wheel can be easily adjusted to adapt to fabrics of different thicknesses and materials, as well as different sewing requirements. The vertical sliding fit between the movable block and the groove, as well as the limiting nut on the threaded shaft, ensures the stability and reliability of the position of the pressing wheel.
[0017] The pressing wheel is composed of several spliced wheels, and this modular design makes the maintenance and replacement of the pressing wheel more convenient. When a spliced wheel is damaged or worn out, only that piece needs to be replaced, without the need to replace the entire pressing wheel, reducing maintenance costs and replacement difficulty.
[0018] The spliced wheels are matched by the protrusions and grooves, which not only enhance the overall structural strength of the pressing wheel, but also improve its durability. At the same time, the limiting ring at one end of the connecting shaft and the locking nut at the other end ensure the stability and safety of the spliced wheels during the sewing process. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Fig. 2 It is a schematic diagram of part of the structure of the utility model;
[0021] Fig. 3 It is a schematic diagram of the structure of the pressing wheel in the utility model;
[0022] The meanings of the labels in the diagram are as follows:
[0023] 1. Pressure roller; 11. Splicing roller; 12. Protrusion; 13. Groove; 14. Connecting shaft; 2. Fabric platform; 3. Bracket; 31. Slide groove; 32. Spring; 33. Movable block; 4. Threaded shaft; 41. Limit nut; 5. Anti-slip texture; 6. Bearing. Detailed Implementation
[0024] 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.
[0025] This utility model provides a fabric pressing assembly for a sewing machine, such as... Figs. 1-3 As shown, the sewing machine includes a pressure roller 1, with a fabric platform 2 positioned below it. The pressure roller 1 is supported and fixed at its axis on one side by a bracket 3, which is pre-installed on the outer casing of the sewing machine. The pressure roller 1 is tilted and has a frustum-shaped structure. A groove 31 is provided on the side of the bracket 3 near the pressure roller 1, and a movable block 33 is located within the groove 31. A threaded shaft 4 is connected to the outer side of the movable block 33, and the outer end of the threaded shaft 4 is rotatably connected to the axis of the pressure roller 1 via a bearing 6. The frustum-shaped design of the pressure roller 1 not only increases the contact area with the fabric on the fabric platform 2, but its tilted arrangement also allows the pressure roller to better conform to the fabric, providing uniform pressure and effectively preventing fabric shifting or wrinkling during sewing, ensuring straightness and overall aesthetics.
[0026] The sliding groove 31 on the bracket 3, in conjunction with the movable block 33, and the rotating connection between the threaded shaft 4 and the bearing 6, together constitute a flexible pressure roller adjustment mechanism. By rotating the threaded shaft 4, the movable block 33 can be driven to slide within the sliding groove 31, thereby adjusting the position of the pressure roller 1. This design allows the pressure roller to be quickly and precisely adjusted according to fabrics of different thicknesses and materials, as well as the specific needs of the sewing process, improving the adaptability and flexibility of sewing.
[0027] Although the pressure roller 1 can be adjusted flexibly, the overall structural design of the assembly is very robust. The rotational connection between the threaded shaft 4 and the bearing 6 ensures the smoothness of the pressure roller during adjustment, while the tight fit between the movable block 33 and the slide groove 31 prevents the pressure roller from shaking or loosening during sewing, thus ensuring the accuracy and stability of sewing.
[0028] In this embodiment, the outer wall of the presser foot 1 is provided with anti-skid lines 5. The anti-skid lines 5 increase the friction between the presser foot 1 and the fabric, making the presser foot more stable when pressing the fabric, effectively preventing the fabric from slipping or shifting during sewing, and improving the precision and stability of sewing.
[0029] Specifically, the top of the movable block 33 is provided with a spring 32. The addition of the spring 32 provides a certain elastic support for the movable block 33, so that the presser foot 1 can automatically adjust the pressing force according to the actual situation when pressing the fabric, ensuring sufficient pressing effect and avoiding damage to the fabric or excessive wear of the sewing machine parts due to excessive pressing force.
[0030] Further, the movable block 33 is vertically slidingly connected with the sliding groove 31, and the width of the movable block 33 is greater than the width of the opening of the sliding groove 31. The vertical sliding connection between the movable block 33 and the sliding groove 31 allows the position of the presser foot 1 to be easily adjusted up and down to adapt to the sewing needs of fabrics of different thicknesses. At the same time, the design of the movable block width being greater than the groove opening width ensures the stability of the movable block during sliding, preventing the presser foot from shaking during sewing.
[0031] Further, the threaded shaft 4 is threadedly connected with a limiting nut 41 near the outer side of the support 3. The limiting nut 41 limits the axial movement of the threaded shaft 4, thereby fixing the position of the presser foot 1. By rotating the limiting nut, the position of the presser foot can be accurately adjusted and ensured to remain stable during sewing. In addition, the limiting nut also plays a protective role for the threaded shaft and the bearing, prolonging the service life of the components.
[0032] Further, the presser foot 1 is composed of a plurality of spliced wheels 11, and the middle part of each spliced wheel 11 is provided with a connecting shaft 14, one end of the connecting shaft 14 is provided with a limiting ring, and the other end is provided with a locking nut. The design of the presser foot 1 being composed of a plurality of spliced wheels 11 makes it easy to disassemble and replace some of the spliced wheels that are worn or damaged, reducing maintenance costs. At the same time, the connecting shaft 14 and the limiting ring and the locking nut ensure the tight connection and stable rotation between the spliced wheels, improving the overall structural strength and durability of the presser foot.
[0033] Further, one side of the spliced wheel 11 is provided with a protrusion 12, and the other side is provided with a groove 13, and the protrusion 12 is connected with the groove 13. The protrusion 12 on one side of the spliced wheel 11 is connected with the groove 13 on the other side, which not only enhances the connection strength between the spliced wheels, but also ensures that the spliced wheels rotate synchronously and stably, avoiding sewing errors caused by loose or misaligned spliced wheels.
[0034] Further, one side surface of the limiting nut is attached to the outer surface of the support 3. The design that one side surface of the limiting nut is attached to the outer surface of the support 3 further enhances the stability of the limiting nut, preventing it from loosening or rotating during the sewing process. This design ensures the accuracy and stability of the position of the presser foot, providing a strong guarantee for high-quality sewing operations.
[0035] The fabric pressing assembly for the sewing machine of the utility model in use, first of all, installs the fabric pressing assembly in the corresponding position of the sewing machine, ensures that the presser foot 1 is opposite the fabric platform 2 below. By rotating the threaded shaft 4, the movable block 33 is driven to slide in the sliding groove 31 of the support 3, so as to adjust the initial position of the presser foot 1 to adapt to the fabric of different thickness and material. After adjustment, tighten the limiting nut 41, fix the position of the threaded shaft 4, and ensure that the presser foot 1 remains stable during the sewing process.
[0036] When the fabric is placed on the fabric platform 2, the presser foot 1 can automatically adhere to the fabric surface due to its circular truncated cone structure and inclined setting, providing uniform pressing force. The anti-skid line 5 increases the friction between the presser foot 1 and the fabric, preventing the fabric from sliding or shifting during the sewing process. The spring 32 provides elastic support for the movable block 33, so that the presser foot 1 can automatically adjust the pressing force according to the actual situation of the fabric, ensuring the pressing effect and avoiding damage to the fabric.
[0037] During the sewing process, if different thickness of fabric is encountered, the up and down position of the presser foot 1 can be easily adjusted by rotating the threaded shaft 4 to adapt to the change of fabric thickness. The vertical sliding cooperation design of the movable block 33 and the sliding groove 31 ensures the stability and stability of the presser foot 1 during the adjustment process.
[0038] When a part of the presser foot 1 is worn or damaged, the new splice wheel can be easily disassembled and replaced. The splice wheel 11 is tightly connected through the connecting shaft 14, the limiting ring and the locking nut, ensuring the stable rotation and overall structural strength of the splice wheel. The clamping cooperation design of the protrusion 12 and the groove 13 makes the splice wheel keep synchronous and stable during rotation, avoiding sewing errors.
[0039] The attachment design of the limiting nut 41 and the outer surface of the support 3 enhances the stability of the limiting nut, preventing it from loosening or rotating during the sewing process, ensuring the accuracy and stability of the position of the presser foot. The overall structural design of the assembly is stable, the rotating connection of the threaded shaft 4 and the bearing 6, the close cooperation of the movable block 33 and the sliding groove 31, etc. The design ensures the stability and durability of the presser foot during long-term use.
[0040] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. A fabric hold down assembly for a sewing machine comprising a presser foot (1) characterised in that: The lower part of the pressing wheel (1) is provided with a cloth platform (2), one side shaft of the pressing wheel (1) is supported and fixed through a support (3), the pressing wheel (1) is arranged obliquely, the pressing wheel (1) is a circular truncated cone structure, the support (3) is provided with a sliding groove (31) near one side of the pressing wheel (1), the sliding groove (31) is provided with a movable block (33) inside, the outer side of the movable block (33) is connected with a threaded shaft (4), the outer end of the threaded shaft (4) is rotatably connected with the shaft center of the pressing wheel (1) through a bearing (6).
2. The fabric presser assembly for a sewing machine according to claim 1, characterized in that: The outer wall of the pressing wheel (1) is provided with anti-skid lines (5).
3. The fabric hold down assembly for a sewing machine according to claim 1, wherein: The top of the movable block (33) is provided with a spring (32).
4. The fabric presser assembly for a sewing machine according to claim 1, wherein: The movable block (33) and the sliding groove (31) are vertically slidingly matched, the width of the movable block (33) is greater than the width of the opening of the sliding groove (31).
5. The fabric hold down assembly for a sewing machine according to claim 1, wherein: The outer side of the threaded shaft (4) is threadedly connected with a limiting nut (41) near the support (3).
6. The fabric presser assembly for a sewing machine according to claim 1, wherein: The pressing wheel (1) is composed of a plurality of spliced wheels (11) in sequence, the middle part of the spliced wheel (11) is provided with a connecting shaft (14), one end of the connecting shaft (14) is provided with a limiting ring, and the other end is provided with a locking nut.
7. The fabric presser assembly for a sewing machine according to claim 6, characterized in that: One side of the spliced wheel (11) is provided with a protruding block (12), and the other side is provided with a recess (13), the protruding block (12) and the recess (13) are clamped and matched.
8. The fabric presser assembly for a sewing machine according to claim 5, wherein: The surface of the limiting nut (41) is matched with the outer surface of the support (3).