Sewing machine presser foot bottom plate structure

Abstract

The application relates to a sewing machine presser foot bottom plate structure and relates to the field of sewing machine presser foot bottom plates. The structure comprises a mounting seat fixedly mounted on a sewing machine, a presser foot plate arranged below the mounting seat, a positioning seat arranged at the middle of the upper end surface of the presser foot plate and connected with the mounting seat, the positioning seat being fixedly connected with the presser foot plate, a guide side plate mounted on one side of the presser foot plate, the presser foot plate being fixedly connected with the guide side plate through insertion, and two groups of anti-hanging cover caps mounted on the head of the presser foot plate. The application can effectively prevent the cloth from being deviated and wrinkled during sewing, guarantees the straight-line conveying of the cloth, and improves the sewing precision and quality through the limiting and auxiliary pressing of the guide side plate on the cloth and the guiding effect of the front arc plate and the tail arc plate of the presser foot plate. The setting of the anti-hanging cover caps, especially the design of the auxiliary hemispheres, greatly reduces the contact area between the head of the presser foot bottom plate and the cloth, and reduces the risk of the cloth being hung.

Description

Technical Field

[0001] This application relates to the technical field of presser foot base plates for sewing machines, and in particular to a structure for a presser foot base plate for sewing machines. Background Technology

[0002] In the use of a sewing machine, the presser foot base plays a crucial role in ensuring stability during the sewing process. In the field of fabric sewing, various fabrics such as cotton, linen, silk, wool, and synthetic fibers have different material properties, leading to different problems during the sewing process.

[0003] Regarding the aforementioned technologies, it has been found that during sewing operations, cotton fabrics, for example, experience a particular problem: cotton fibers accumulate at the sewing area as the fabric moves. When this accumulation reaches a certain level, sewing must be stopped for manual removal. This not only further disrupts the sewing process and increases labor costs, but also risks introducing new defects due to manual handling, causing numerous inconveniences to production. The obstructed sewing process prevents smooth operation, severely impacting sewing efficiency and finished product quality. Utility Model Content

[0004] To ensure stable sewing of cotton fabrics, this application provides a sewing machine presser foot base plate structure.

[0005] The sewing machine presser foot base plate structure provided in this application adopts the following technical solution: A sewing machine presser foot base structure includes a mounting base fixedly installed on the sewing machine, a presser foot plate disposed below the mounting base, a positioning seat connected to the mounting base disposed in the middle of the upper surface of the presser foot plate, the positioning seat being fixedly connected to the presser foot plate, a guide side plate being installed on one side of the presser foot plate, the presser foot plate being inserted and fixedly connected to the guide side plate, and two sets of anti-snag caps being installed on the head of the presser foot plate, the anti-snag caps being fixedly connected to the presser foot plate.

[0006] By adopting the above technical solution, the mounting base ensures stable installation on the sewing machine. A presser foot plate located below the mounting base assists in holding the fabric during sewing. A positioning seat connected to the mounting base is located in the middle of the upper surface of the presser foot plate, facilitating a stable connection between the presser foot plate and the mounting base. An anti-snag cap on the head of the presser foot plate effectively prevents fabric snagging during sewing, improving sewing quality and efficiency. The guide side plate better guides the fabric, ensuring straight stitches.

[0007] Optionally, the mounting base includes a connecting part and a side ear plate connected to the positioning base. There are two sets of side ear plates, and the two sets of side ear plates are installed on both sides of the lower end face of the connecting part, and the side ear plates are integrally formed with the connecting part.

[0008] By adopting the above technical solution, the connecting part of the mounting base is used to securely connect with the sewing machine body, ensuring that the entire presser foot base structure can be reliably installed on the sewing machine. Two sets of side ear plates are connected to the positioning seat. This structural design makes the connection between the mounting base and the presser foot plate more stable, ensuring that the presser foot plate will not wobble or shift during sewing, thereby improving sewing accuracy and stability. The side ear plates and the connecting part are integrally molded, enhancing the overall strength of the mounting base and reducing the risk of damage caused by external forces.

[0009] Optionally, the pressure foot plate includes a main body, a front arc plate, and a rear arc plate. The front arc plate is symmetrically arranged on the front end face of the main body, and the rear arc plate is installed on the rear end face of the main body. The main body, the front arc plate, and the rear arc plate are integrally formed.

[0010] By adopting the above technical solution, the main body of the presser foot plate serves as the primary load-bearing component, providing a flat support surface for the fabric. The front arc plate, symmetrically positioned at the front end of the main body, guides the fabric as it enters the presser foot plate, allowing it to flow more smoothly into the sewing area and reducing wrinkles and jamming. The rear arc plate, installed at the rear end of the main body, helps the fabric leave the presser foot plate smoothly after sewing, preventing fabric from piling up or getting caught at the rear. The main body, front arc plate, and rear arc plate are integrally molded, improving the overall rigidity and durability of the presser foot plate.

[0011] Optionally, the upper end face of the main board is provided with a plug-in shell for mounting the guide side plate. The plug-in shell is vertically mounted on the main board and is integrally formed with the main board.

[0012] By adopting the above technical solution, the plug-in shell and the main board are integrally formed, which is simple in structure, easy to install, and can stably install the guide side plate.

[0013] Optionally, the guide side plate includes an outer plate and an auxiliary pressure strip. The outer plate is vertically mounted on one side of the main plate, and the auxiliary pressure strip is mounted on the front end of the outer plate and is fixedly connected to the outer plate.

[0014] By adopting the above technical solution, the outer plate of the guide side plate is vertically installed on one side of the main plate, which can limit the side of the fabric, prevent the fabric from shifting to one side during sewing, ensure the straight feeding of the fabric, and improve the sewing quality. The auxiliary pressure strip is installed at the front end of the outer plate, which can provide additional pressure to the front end of the fabric, further enhancing the stability of the fabric. The right-angle insert plate on the inner side of the outer plate corresponds to the plug shell on the main plate, and the guide side plate and the presser foot plate are fixedly connected by plugging. This connection method is convenient for installation and disassembly, and facilitates the replacement or maintenance of the guide side plate.

[0015] Optionally, a right-angle insert plate corresponding to the plug-in shell is provided on the inner side of the outer plate, and the right-angle insert plate is fixedly connected to the outer plate.

[0016] By adopting the above technical solution, the cooperation between the right-angle insert plate and the plug shell makes the installation of the guide side plate more secure and reliable, and less prone to loosening.

[0017] Optionally, the anti-snag cap includes a horizontal cap base, a lower clamping plate, and an upper clamping plate. The lower clamping plate and the upper clamping plate are symmetrically arranged on both sides of the lower end face of the horizontal cap base, and both the lower clamping plate and the upper clamping plate are fixedly connected to the horizontal cap base.

[0018] By adopting the above technical solution, the transverse cap base, lower clamping plate, and upper clamping plate of the anti-snag cap work together to install it on the head of the presser foot plate. The lower and upper clamping plates are symmetrically arranged on both sides of the lower end face of the transverse cap base, which can firmly clamp the head of the presser foot plate and prevent the anti-snag cap from falling off. The auxiliary hemispheres at both ends of the transverse cap base can reduce the contact area between the head of the presser foot plate and the fabric, reducing the possibility of fabric snagging. The anti-snag slider on the inner side of the upper clamping plate can increase the friction with the presser foot plate, further improving the stability of the anti-snag cap installation.

[0019] Optionally, auxiliary hemispheres are provided at both ends of the transverse cap seat, the auxiliary hemispheres are integrally formed with the transverse cap seat, and anti-slip blocks are fixedly installed on the inner side of the upper clamping plate.

[0020] By adopting the above technical solutions, the auxiliary hemisphere can reduce the friction between the presser foot and the fabric, making the sewing process smoother. The anti-slip block can increase the friction between the upper clamp and the fabric, preventing the fabric from slipping.

[0021] In summary, this application includes at least one of the following beneficial technical effects: By using the guide side plate to limit the fabric's position and the auxiliary pressure strip to press down, as well as the guiding effect of the front and rear arc plates of the presser foot, this application can effectively prevent fabric deviation and wrinkles during sewing, ensuring straight fabric transport and thus improving sewing precision and quality. The anti-snag cap, especially its auxiliary hemispherical design, greatly reduces the contact area between the presser foot's head and the fabric, lowering the risk of fabric snagging, avoiding fabric damage and sewing interruptions caused by snagging, and improving sewing efficiency. The guide side plate and presser foot are connected by a plug-in method, making installation and disassembly convenient and facilitating replacement or maintenance of the guide side plate. Simultaneously, the structural design of the anti-snag cap also simplifies its installation and disassembly, reducing maintenance costs and time. Attached Figure Description

[0022] Figure 1 This is a perspective view of the overall structure in the embodiments of this application.

[0023] Figure 2 yes Figure 1Side view of the device shown.

[0024] Figure 3 This is a perspective view of the pressure foot plate in the embodiments of this application.

[0025] Figure 4 This is a perspective view of the guide side plate in the embodiments of this application.

[0026] Figure 5 This is a perspective view of the anti-snagging cap in the embodiments of this application.

[0027] Figure 6 yes Figure 5 Side view of the device shown.

[0028] Explanation of reference numerals in the attached drawings: 1. Mounting base; 11. Connecting part; 12. Side ear plate; 2. Pressure foot plate; 21. Main plate part; 211. Insert shell; 22. Front arc plate; 23. Tail arc plate; 3. Positioning seat; 4. Guide side plate; 41. Outer plate part; 411. Right angle insert plate; 42. Auxiliary pressure strip; 5. Anti-snag cap; 51. Horizontal cap seat; 511. Auxiliary hemisphere; 52. Lower clamping plate; 53. Upper clamping plate; 531. Anti-slip block. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] This application discloses a sewing machine presser foot base plate structure. (Refer to...) Figure 1 , Figure 2 and Figure 3As shown, a sewing machine presser foot base structure includes a mounting base 1 fixedly installed on the sewing machine. A presser foot 2 is disposed below the mounting base 1. A positioning seat 3 connected to the mounting base 1 is disposed in the middle of the upper surface of the presser foot 2. The positioning seat 3 is fixedly connected to the presser foot 2. A guide side plate 4 is installed on one side of the presser foot 2. The presser foot 2 and the guide side plate 4 are inserted and fixedly connected. Two sets of anti-snag caps 5 are also installed on the head of the presser foot 2. The anti-snag caps 5 are fixedly connected to the presser foot 2. The mounting base 1 ensures stable installation on the sewing machine. The presser foot 2 disposed below the mounting base 1 helps to hold the fabric during sewing. The positioning seat 3 in the middle of the upper surface of the presser foot 2, connected to the mounting base 1, allows the presser foot 2 to be stably connected to the mounting base 1 through the positioning seat 3. The anti-snag caps 5 on the head of the presser foot 2 effectively prevent fabric from snagging during sewing, improving sewing quality and efficiency. The guide side plate 4 better guides the sewing material, ensuring straight stitches. The mounting base 1 includes a connecting part 11 and side ear plates 12 connected to the positioning base 3. There are two sets of side ear plates 12, installed on both sides of the lower end face of the connecting part 11, and the side ear plates 12 are integrally formed with the connecting part 11. The connecting part 11 of the mounting base 1 is used for a secure connection with the sewing machine body, ensuring that the entire presser foot base structure can be reliably installed on the sewing machine. The two sets of side ear plates 12 are connected to the positioning base 3. This structural design makes the connection between the mounting base 1 and the presser foot 2 more stable, ensuring that the presser foot 2 will not wobble or shift during sewing, thereby improving sewing accuracy and stability. The integral formation of the side ear plates 12 with the connecting part 11 enhances the overall strength of the mounting base 1 and reduces the risk of damage caused by external forces.

[0031] Reference Figure 2 and Figure 3As shown, the presser foot 2 includes a main plate 21, a front arc plate 22, and a rear arc plate 23. The front arc plate 22 is symmetrically arranged on the front end face of the main plate 21, and the rear arc plate 23 is installed on the rear end face of the main plate 21. The main plate 21, front arc plate 22, and rear arc plate 23 are integrally formed. The main plate 21 of the presser foot 2 is the main load-bearing part, providing a flat support surface for the fabric. The front arc plate 22, symmetrically arranged on the front end face of the main plate 21, guides the fabric when it enters under the presser foot 2, allowing the fabric to enter the sewing area more smoothly and reducing wrinkles and jamming. The rear arc plate 23, installed on the rear end face of the main plate 21, helps the fabric to leave the presser foot 2 smoothly after sewing, preventing the fabric from piling up or getting caught at the rear end. The integral formation of the main plate 21, front arc plate 22, and rear arc plate 23 improves the overall rigidity and durability of the presser foot 2. The upper surface of the main board 21 is provided with a connector shell 211 for mounting the guide side plate 4. The connector shell 211 is vertically mounted on the main board 21 and is integrally formed with the main board 21. The connector shell 211 is integrally formed with the main board 21, which has a simple structure, is easy to install, and can stably mount the guide side plate 4.

[0032] Reference Figure 4 As shown, the guide side plate 4 includes an outer plate portion 41 and an auxiliary pressure strip 42. The outer plate portion 41 is vertically mounted on one side of the main plate portion 21, and the auxiliary pressure strip 42 is mounted on the front end of the outer plate portion 41 and is fixedly connected to the outer plate portion 41. The outer plate portion 41 of the guide side plate 4 is vertically mounted on one side of the main plate portion 21, which can limit the side edge of the fabric, prevent the fabric from shifting to one side during sewing, ensure the straight feeding of the fabric, and improve the sewing quality. The auxiliary pressure strip 42 is mounted on the front end of the outer plate portion 41, which can provide additional pressure to the front end of the fabric, further enhancing the stability of the fabric. The right-angle insert plate 411 on the inner side of the outer plate portion 41 corresponds to the insert shell 211 on the main plate portion 21. The guide side plate 4 is fixedly connected to the presser foot plate 2 by inserting. This connection method is convenient for installation and disassembly, and facilitates the replacement or maintenance of the guide side plate 4. A right-angle insert plate 411 corresponding to the plug-in shell 211 is provided on the inner side of the outer plate 41, and the right-angle insert plate 411 is fixedly connected to the outer plate 41. The cooperation between the right-angle insert plate 411 and the plug-in shell 211 makes the installation of the guide side plate 4 more secure and reliable, and less prone to loosening.

[0033] Reference Figure 5 and Figure 6As shown, the anti-snag cap 5 includes a transverse cap base 51, a lower clamping plate 52, and an upper clamping plate 53. The lower clamping plate 52 and the upper clamping plate 53 are symmetrically arranged on both sides of the lower end face of the transverse cap base 51, and both the lower clamping plate 52 and the upper clamping plate 53 are fixedly connected to the transverse cap base 51. The transverse cap base 51, the lower clamping plate 52, and the upper clamping plate 53 of the anti-snag cap 5 work together to install it on the head of the presser foot plate 2. The lower clamping plate 52 and the upper clamping plate 53 are symmetrically arranged on both sides of the lower end face of the transverse cap base 51, which can firmly clamp the head of the presser foot plate 2 and prevent the anti-snag cap 5 from falling off. The auxiliary hemispheres 511 at both ends of the transverse cap base 51 can reduce the contact area between the head of the presser foot plate and the fabric, reducing the possibility of snagging. The anti-snag slider 531 on the inner side of the upper clamping plate 53 can increase the friction with the presser foot plate 2, further improving the stability of the anti-snag cap 5 installation. Auxiliary hemispheres 511 are provided at both ends of the transverse cap base 51, and the auxiliary hemispheres 511 are integrally formed with the transverse cap base 51. Anti-slip blocks 531 are fixedly installed on the inner side of the upper clamping plate 53. The auxiliary hemispheres 511 can reduce the friction between the presser foot plate 2 and the sewing material, making the sewing process smoother. The anti-slip blocks 531 can increase the friction between the upper clamping plate 53 and the sewing material, preventing the sewing material from slipping.

[0034] The implementation principle of the sewing machine presser foot base plate structure in this application embodiment is as follows: In the specific implementation process, the mounting base 1 can be fixed to the sewing machine with screws, and then the presser foot plate 2 is connected to the mounting base 1 through the positioning base 3. The right-angle insert plate 411 of the guide side plate 4 is inserted into the plug shell 211 of the main plate 21 to achieve a fixed connection between the guide side plate 4 and the presser foot plate 2. The lower clamping plate 52 and the upper clamping plate 53 of the anti-snag cap 5 are clamped to the head of the presser foot plate 2 to achieve a fixed connection between the anti-snag cap 5 and the presser foot plate 2. In this way, during use, the presser foot plate 2 can be used to assist in pressing the cotton fabric. When the cotton fabric moves during sewing, the guide side plate can guide the cotton to spread to both sides, avoiding its accumulation at the sewing area and affecting the knitting operation. The center and side of the cotton fabric are separated into two areas to prevent cotton, linen, silk, and wool from passing through the partition and interfering with the sewing.

[0035] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sewing machine presser foot base plate structure, comprising a mounting base (1) fixedly installed on a sewing machine, characterized in that: A pressure foot plate (2) is provided below the mounting base (1). A positioning seat (3) connected to the mounting base (1) is provided in the middle of the upper surface of the pressure foot plate (2). The positioning seat (3) is fixedly connected to the pressure foot plate (2). A guide side plate (4) is installed on one side of the pressure foot plate (2). The pressure foot plate (2) is fixedly connected to the guide side plate (4). Two sets of anti-snag caps (5) are also installed on the head of the pressure foot plate (2). The anti-snag caps (5) are fixedly connected to the pressure foot plate (2).

2. The sewing machine presser foot base plate structure according to claim 1, characterized in that: The mounting base (1) includes a connecting part (11) and a side ear plate (12) connected to the positioning base (3). There are two sets of side ear plates (12), and the two sets of side ear plates (12) are installed on both sides of the lower end face of the connecting part (11), and the side ear plate (12) and the connecting part (11) are integrally formed.

3. The sewing machine presser foot base plate structure according to claim 2, characterized in that: The presser foot plate (2) includes a main plate (21), a front arc plate (22) and a tail arc plate (23). The front arc plate (22) is symmetrically arranged on the front end face of the main plate (21), and the tail arc plate (23) is installed on the rear end face of the main plate (21). The main plate (21), the front arc plate (22) and the tail arc plate (23) are integrally formed.

4. The sewing machine presser foot base plate structure according to claim 3, characterized in that: The upper surface of the main board (21) is provided with a plug shell (211) for mounting the guide side plate (4). The plug shell (211) is vertically mounted on the main board (21) and is integrally formed with the main board (21).

5. The sewing machine presser foot base plate structure according to claim 4, characterized in that: The guide side plate (4) includes an outer plate (41) and an auxiliary pressure strip (42). The outer plate (41) is vertically installed on one side of the main plate (21), and the auxiliary pressure strip (42) is installed at the front end of the outer plate (41) and is fixedly connected to the outer plate (41).

6. The sewing machine presser foot base plate structure according to claim 5, characterized in that: The inner side of the outer plate (41) is provided with a right-angle insert plate (411) corresponding to the plug shell (211), and the right-angle insert plate (411) is fixedly connected to the outer plate (41).

7. The sewing machine presser foot base plate structure according to claim 6, characterized in that: The anti-snag cap (5) includes a horizontal cap base (51), a lower clamping plate (52) and an upper clamping plate (53). The lower clamping plate (52) and the upper clamping plate (53) are symmetrically arranged on both sides of the lower end face of the horizontal cap base (51), and the lower clamping plate (52) and the upper clamping plate (53) are fixedly connected to the horizontal cap base (51).

8. The sewing machine presser foot base plate structure according to claim 7, characterized in that: The two ends of the transverse cap seat (51) are provided with auxiliary hemispheres (511), the auxiliary hemispheres (511) are integrally formed with the transverse cap seat (51), and the inner side of the upper clamping plate (53) is fixedly installed with anti-slip blocks (531).

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