Intelligent presser foot structure capable of being controlled individually up and down

Abstract

This utility model discloses an intelligent presser foot structure that can be independently controlled up and down, including a shaft extending horizontally through the housing and a bushing extending vertically through the housing. A drive motor is installed inside the housing, and the output shaft of the drive motor is connected to a main gear column. A driven gear column is connected to the rear end of the shaft, and the main gear column and the driven gear column mesh. The drive motor is signal-connected to a controller, which controls the reciprocating rotation amplitude of the drive motor output shaft after receiving control commands. The bushing extends out of the housing and is connected to the presser foot. A lifting rod is connected to the front end of the shaft, and a bushing block is connected to the bushing. A transmission arm is provided between the lifting rod and the bushing block. The presser foot is driven by the drive motor, and the cooperation between the presser foot and the sewing needle can be arbitrarily adjusted. When dealing with fabrics of different thicknesses, the reciprocating rotation amplitude of the drive motor output shaft can be adjusted according to the thickness gradient, thereby adjusting the height of the presser foot. This effectively solves the problem of presser foot height cooperation, reduces the frequency of skipped stitches and thread breakage during sewing, and improves sewing quality.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to an intelligent presser foot structure that can be individually controlled up and down. Background Technology

[0002] The presser foot is one of the important accessories on a sewing machine. During the sewing process, the presser foot can hold down the fabric and work together with the feed dog to control the movement of the fabric.

[0003] Currently, the mainstream presser foot used in sewing machines has an eccentric structure installed on the upper shaft. This eccentric structure drives a connecting rod, enabling the presser foot to move up and down during sewing. However, the adjustment of the presser foot and the needle is limited, and poor coordination can lead to skipped stitches and thread breakage during sewing. In addition, the overall height of the presser foot needs to be adjusted by adjusting screws, and different heights are required for different material thicknesses, making the operation quite complicated. Therefore, this utility model proposes an intelligent presser foot structure that can independently control its up and down movement, which can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent presser foot structure that can be individually controlled up and down, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent presser foot structure that can be individually controlled up and down, including a shaft rod that passes horizontally through the housing and a bushing rod that passes vertically through the housing, a drive motor is installed inside the housing, the output shaft of the drive motor is connected to a main gear column, the rear end of the shaft rod is connected to a driven gear column, and the main gear column and the driven gear column mesh with each other;

[0006] The drive motor is signal-connected to a controller, which is used to control the reciprocating rotation amplitude of the drive motor output shaft after receiving control commands. The bushing extends out of the housing and is connected to a pressure foot. The front end of the shaft is connected to a lifting rod. The bushing is connected to a bushing block. A transmission arm is provided between the lifting rod and the bushing block.

[0007] As a preferred technical solution, the bushing has a mounting head, and the pressure foot is connected to the mounting head by a locking screw.

[0008] As a preferred technical solution, the housing is provided with multiple sets of bushings for the shaft and bushing to pass through.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The presser foot is driven by a drive motor, and the fit between the presser foot and the sewing needle can be adjusted arbitrarily. When dealing with fabrics of different thicknesses, the reciprocating rotation amplitude of the drive motor output shaft can be adjusted according to the thickness gradient, thereby adjusting the height of the presser foot. The operation is highly intelligent, effectively solving the problem of presser foot height matching, reducing the frequency of skipped stitches and thread breakage during the sewing process, and resulting in high sewing quality. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram showing the relationship between the drive motor and the shaft transmission of this utility model;

[0013] Figure 3 This is a schematic diagram of the transmission relationship between the shaft and the bushing of this utility model;

[0014] In the diagram: 10. Housing; 11. Bushing; 20. Shaft; 21. Driven gear; 22. Lifting rod; 30. Liner; 31. Presser foot; 32. Liner block; 33. Drive arm; 40. Sewing needle; 50. Drive motor; 51. Main gear. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-3

[0017] Example 1

[0018] A smart presser foot 31 structure that can be individually controlled up and down is provided:

[0019] Please see Figure 1 , Figure 2 It includes a shaft 20 and a bushing 30. The shaft 20 is horizontally inserted through the housing 10, and the bushing 30 is vertically inserted through the housing 10. A drive motor 50 is installed inside the housing 10. The output shaft of the drive motor 50 is connected to a main gear 51. The rear end of the shaft 20 is connected to a driven gear 21. The main gear 51 and the driven gear 21 mesh.

[0020] The drive motor 50 can drive the shaft 20 to rotate by meshing with the main gear 51 and the driven gear 21, thereby realizing the transmission of power. The drive motor 50 is connected to a controller, which is used to control the amplitude of the reciprocating rotation of the output shaft of the drive motor 50 after receiving control commands.

[0021] Please see Figure 2 , Figure 3 The liner 30 extends out of the housing 10 and is connected to the press foot 31. The press foot 31 has a needle hole. The front end of the shaft 20 is connected to the lifting rod 22. The liner 30 is connected to the liner block 32. A transmission arm 33 is provided between the lifting rod 22 and the liner block 32.

[0022] When the shaft 20 reciprocates, it drives the lifting rod 22 to rotate synchronously. The lifting rod 22 drives the pad 32 to move through the transmission arm 33, thereby driving the pad 30 to move vertically back and forth, effectively pressing the fabric flat on the needle plate and preventing it from shifting, lifting or wrinkling during sewing.

[0023] Example 2

[0024] A smart presser foot 31 structure that can be individually controlled up and down is provided:

[0025] Please see Figure 1 , Figure 2 It includes a shaft 20 and a bushing 30. The shaft 20 is horizontally inserted through the housing 10, and the bushing 30 is vertically inserted through the housing 10. The housing 10 is provided with multiple sets of bushings 11 for the shaft 20 and the bushing 30 to pass through respectively.

[0026] A drive motor 50 is installed inside the housing 10. The output shaft of the drive motor 50 is connected to a main gear 51, and the rear end of the shaft 20 is connected to a driven gear 21. The main gear 51 and the driven gear 21 mesh.

[0027] The drive motor 50 can drive the shaft 20 to rotate by meshing with the main gear 51 and the driven gear 21, thereby realizing the transmission of power. The drive motor 50 is connected to a controller, which is used to control the amplitude of the reciprocating rotation of the output shaft of the drive motor 50 after receiving control commands.

[0028] Please see Figure 2 , Figure 3 The bushing 30 extends out of the housing 10 and is connected to the pressure foot 31. The pressure foot 31 has a needle hole. The bushing 30 has a mounting head. The pressure foot 31 is connected to the mounting head by a locking screw, so that the pressure foot 31 can be disassembled and replaced. The front end of the shaft 20 is connected to the lifting rod 22. The bushing 30 is connected to the bushing block 32. A transmission arm 33 is provided between the lifting rod 22 and the bushing block 32.

[0029] When the shaft 20 reciprocates, it drives the lifting rod 22 to rotate synchronously. The lifting rod 22 drives the pad 32 to move through the transmission arm 33, thereby driving the pad 30 to move vertically back and forth, effectively pressing the fabric flat on the needle plate and preventing it from shifting, lifting or wrinkling during sewing.

[0030] The presser foot 31 is driven by the drive motor 50. The fit between the presser foot 31 and the sewing needle 40 can be adjusted arbitrarily. When dealing with fabrics of different thicknesses, the reciprocating rotation amplitude of the output shaft of the drive motor 50 can be adjusted according to the thickness gradient, thereby adjusting the height of the presser foot 31. The operation is highly intelligent, effectively solving the problem of the fit between the presser foot 31 and reducing the frequency of skipped stitches and broken threads during the sewing process, resulting in high sewing quality.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smart presser foot structure with individually controllable up and down movement, characterized in that, It includes a shaft (20) that passes horizontally through the housing (10) and a bushing (30) that passes vertically through the housing (10). A drive motor (50) is installed inside the housing (10). The output shaft of the drive motor (50) is connected to a main gear column (51). The rear end of the shaft (20) is connected to a driven gear column (21). The main gear column (51) meshes with the driven gear column (21). The drive motor (50) is connected to a controller. The controller is used to control the amplitude of the reciprocating rotation of the output shaft of the drive motor (50) after receiving control commands. The bushing (30) extends out of the housing (10) and is connected to a pressure foot (31). The front end of the shaft (20) is connected to a lifting rod (22). The bushing (30) is connected to a bushing block (32). A transmission arm (33) is provided between the lifting rod (22) and the bushing block (32).

2. The intelligent presser foot (31) structure with individually controllable up and down movement according to claim 1, characterized in that, The bushing (30) has a mounting head, and the pressure foot (31) is connected to the mounting head by a locking screw.

3. The intelligent presser foot (31) structure that can be individually controlled up and down according to claim 1, characterized in that, The housing (10) is provided with multiple sets of bushings (11) for the shaft (20) and bushing (30) to pass through respectively.

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