Presser foot mechanism with multiple self-adaptive height presser feet

Abstract

The utility model discloses a presser foot mechanism with a plurality of self-adaptive height presser feet, and relates to the technical field of presser feet. Comprising a presser foot mounting base, the presser foot mounting base is provided with a plurality of matching grooves linearly and evenly distributed in the length direction of the presser foot mounting base, first presser feet are matched in the matching grooves located in the ends of the presser foot mounting base in the length direction, and second presser feet are matched in the other matching grooves except for the two matching grooves located in the ends of the presser foot mounting base in the length direction. The upper end of the first presser foot and the upper end of the second presser foot are both provided with matching holes, and the matching holes are matched with springs extending into the matching grooves; the presser foot can adapt to different sewing position heights when multiple pieces of fabric are stacked, so that the effect of pressing all the fabric is achieved, and the situation that when the presser foot mechanism pulls the fabric to move, the fabric in the middle layer position cannot be pressed by the presser foot and deviates out of the sewing position is prevented. The problem that the fabric cannot be sewn normally due to the fact that the fabric deviates from the sewing position in the sewing process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of presser feet, in particular to a presser foot mechanism with a plurality of self-adaptive height presser feet. Background Art

[0002] The presser foot is an important sewing accessory of a sewing machine. It is used to press the fabric so that it is in close contact with the needle plate so that sewing can be completed by the needle and thread of the sewing machine. The presser foot plays a key role in the sewing process. It affects the smoothness, accuracy and quality of sewing. The presser foot is usually made of metal and has a certain weight and pressure to ensure proper compression of the fabric. Their shape and size will vary according to different sewing needs. For example, the presser foot for heavy fabrics or leather may be wider and stronger, while the presser foot for light fabrics may be thinner.

[0003] In the prior art, the presser foot mechanism is mainly composed of a mounting plate and a presser foot, and the presser foot is rigidly connected to the mounting plate, resulting in that the height of the presser foot cannot be adjusted, and some fabrics to be sewn often have higher thickness on both sides and lower thickness in the middle. For example, the back buckle straps of underwear are mostly designed with thick sides and thin middle to provide better support and fixation. Therefore, when the presser foot mechanism pulls the back buckle strap to move, the presser foot rigidly connected to the mounting plate will not be able to press the fabric in the middle layer of the back buckle strap. Therefore, the fabric in the middle layer of the back buckle strap is easily deviated from the sewing position, resulting in the fabric being unable to be sewn normally. Utility Model Content

[0004] In view of the above technical deficiencies, the utility model provides a presser foot mechanism with a plurality of presser feet with self-adaptive heights to solve the problems raised in the above background technology.

[0005] In order to achieve the above object, the utility model is implemented through the following technical solutions:

[0006] A presser foot mechanism with multiple adaptive height presser feet, comprising: a presser foot mounting seat, the presser foot mounting seat is provided with a plurality of matching grooves evenly distributed in a straight line along the length direction of the presser foot mounting seat, a first presser foot is matched in the matching grooves located at the ends of the presser foot mounting seat in the length direction, and a second presser foot is matched in the remaining matching grooves except for two matching grooves located at the ends of the presser foot mounting seat in the length direction, the upper ends of the first presser foot and the second presser foot are both provided with matching holes, the matching holes are matched with springs extending into the matching grooves, one of the end faces in the width direction of the presser foot mounting seat is provided with a plurality of screw holes evenly distributed in a straight line along the length direction of the presser foot mounting seat, the wall surfaces on both sides of the upper end of the first presser foot and the wall surfaces on both sides of the upper end of the second presser foot are both provided with waist holes, and the screw holes are respectively opposite to the waist holes on one side of the first presser foot and the second presser foot.

[0007] Furthermore, the first presser foot and the second presser foot have the same structure and are installed in opposite directions in the matching groove. The upper end of the first presser foot is integrally formed on the top surface of the lower end of the first presser foot in an eccentric connection manner, and the distances from the two ends of the lower end of the first presser foot in the width direction of the presser foot mounting seat to the upper end of the first presser foot are not equal.

[0008] Furthermore, the first presser foot and the second presser foot are distributed in a front-to-rear staggered manner in the width direction of the presser foot mounting seat.

[0009] Furthermore, limit blocks are provided at both ends of the presser foot mounting seat.

[0010] Furthermore, the bottom surfaces of the first presser foot and the second presser foot are both provided with a plurality of protrusions.

[0011] The beneficial effects of the utility model are:

[0012] The presser foot of the presser foot mechanism is connected to the presser foot mounting seat through a spring, so that the presser foot can adapt to the different stitching position heights when multiple pieces of fabric are stacked, so as to achieve the effect of pressing all the fabrics tightly, and prevent the fabric in the middle position from shifting out of the stitching position because it cannot be pressed by the presser foot when the presser foot mechanism pulls the fabric to move. Compared with a presser foot mechanism with an unadjustable presser foot height, the presser foot of the presser foot mechanism has a better pressing effect on the fabric, and solves the problem that the fabric cannot be sewn normally due to the fabric shifting from the sewing position during the sewing process, so that the sewing machine can accurately sew the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the presser foot mechanism.

[0014] Figure 2 It is a structural diagram of the presser foot mechanism from another angle.

[0015] Figure 3 It is a side view of the presser foot mechanism.

[0016] Figure 4 It is a bottom view of the presser foot mechanism.

[0017] Figure 5 It is a structural diagram of the cooperation between the presser foot mechanism and the sewing machine.

[0018] Figure 6 It is a structural schematic diagram of the presser foot mounting seat of the presser foot mechanism.

[0019] Figure 7 It is a structural schematic diagram of the first presser foot of the presser foot mechanism.

[0020] Figure 8 It is a structural schematic diagram of the second presser foot of the presser foot mechanism.

[0021] In the figure, 1, presser foot mounting seat; 2, matching groove; 3, first presser foot; 4, second presser foot; 5, matching hole; 6, spring; 7, screw hole; 8, waist hole; 9, limit block; 10, protrusion. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figures 1 to 8 In combination with the shown presser foot mechanism with multiple adaptive height presser feet, it includes: a presser foot mounting seat 1, the presser foot mounting seat 1 is provided with a plurality of matching grooves 2 which are evenly distributed in a straight line along the length direction of the presser foot mounting seat 1, a first presser foot 3 is matched in the matching grooves 2 located at the ends of the length direction of the presser foot mounting seat 1, except for two matching grooves 2 located at the ends of the length direction of the presser foot mounting seat 1, the rest of the matching grooves 2 are matched with second presser feet 4, the upper ends of the first presser foot 3 and the upper ends of the second presser foot 4 are both provided with matching holes 5, the matching holes 5 are matched with springs 6 extending into the matching grooves 2, one of the end surfaces in the width direction of the presser foot mounting seat 1 is provided with a plurality of screw holes 7 which are evenly distributed in a straight line along the length direction of the presser foot mounting seat 1, the walls on both sides of the upper end of the first presser foot 3 and the walls on both sides of the upper end of the second presser foot 4 are provided with waist holes 8, and the screw holes 7 are respectively opposite to the waist holes on one side of the first presser foot 3 and the second presser foot 4.

[0024] Among them, the presser foot mechanism is provided with a matching groove 2 at the bottom of the presser foot mounting seat 1 to accommodate the upper end parts of the first presser foot 3 and the second presser foot 4, and a spring 6 is provided in the matching groove 2, and the end of the spring 6 away from the matching groove 2 is connected to the first presser foot 3 or the second presser foot 4; therefore, the presser foot can adapt to the different stitching position heights when multiple pieces of fabric are stacked, so as to achieve the effect of pressing all fabrics, and prevent the fabric in the middle position from being deviated to the outside of the stitching position due to the inability to be pressed by the presser foot when the presser foot mechanism pulls the fabric to move. Compared with the presser foot mechanism with non-adjustable presser foot height, the presser foot of the present presser foot mechanism has a better pressing effect on the fabric, solves the problem that the fabric cannot be sewn normally due to the fabric deviating from the sewing position during the sewing process, and enables the sewing machine to accurately sew the fabric.

[0025] In addition, during installation, the presser foot is first connected to the presser foot mounting seat 1 through the spring 6, and then screws can be added to the screw holes 7 to further fix the presser foot; specifically, the added screw passes through the screw hole 7 to reach the matching groove 2 and cooperates with one of the waist holes 8 of the first presser foot 3 located in the matching groove 2. In addition, the added screw can also pass through the screw hole 7 to reach the matching groove 2 and cooperate with one of the waist holes 8 of the second presser foot 4 located in the matching groove 2, thereby making the connection between the presser foot and the presser foot mounting seat 1 more stable and preventing the presser foot from falling off the presser foot mounting seat 1; the waist hole 8 has a certain length, so after the screw is added to the screw hole 7, the first presser foot 3 and the second presser foot 4 can still move in the vertical direction, thereby ensuring that the presser foot can adapt to fabrics of different thicknesses.

[0026] In an optional embodiment, if Figure 7 and Figure 8 As shown in the combination, the first presser foot 3 and the second presser foot 4 have the same structure and are installed in opposite directions in the matching groove 2. The upper end of the first presser foot 3 is integrally formed on the top surface of the lower end of the first presser foot 3 in an eccentric connection manner, and the distances from the two ends of the lower end of the first presser foot 3 in the width direction of the presser foot mounting seat 1 to the upper end of the first presser foot 3 are not equal.

[0027] Among them, the first presser foot 3 and the second presser foot 4 have the same structure. The first presser foot 3 is taken as an example for explanation here. The upper end of the first presser foot 3 is integrally formed on the top surface of the lower end of the first presser foot 3 in an eccentric connection manner. Therefore, the distances from the two ends of the lower end of the first presser foot 3 in the width direction of the presser foot mounting seat 1 to the upper end of the first presser foot 3 are not equal to each other, so that the first presser foot 3 can be installed in the matching groove 2 in different ways; taking the matching of one of the matching grooves 2 and the first presser foot 3 as an example, the end of the lower end of the first presser foot 3 in the width direction of the presser foot mounting seat 1 with a larger distance to the upper end of the first presser foot 3 is recorded as the first end, and the first end is located at the presser foot mounting seat On one side of the width direction of the mounting seat 1, first take out the screw in the screw hole 7 corresponding to the matching groove 2, then take out the first presser foot 3, and then rotate the taken out first presser foot 3 one hundred and eighty degrees with the upper end of the first presser foot 3 as the axis, and then insert the first presser foot 3 back into the matching groove 2. After the first presser foot 3 is reinserted into the matching groove 2, the first end portion will be located on the other side of the width direction of the presser foot mounting seat 1. Because the distances from the lower end of the first presser foot 3 to the upper end of the first presser foot 3 are not equal at the two ends in the width direction of the presser foot mounting seat 1, the first presser foot 3 and the second presser foot 4 can be distributed in the form of front and back staggered in the width direction of the presser foot mounting seat 1.

[0028] In an optional embodiment, if Figure 2 , Figure 4 , Figure 7 and Figure 8 As shown in the figure, the first presser foot 3 and the second presser foot 4 are distributed in a front-to-back staggered manner in the width direction of the presser foot mounting seat 1 .

[0029] Among them, after the first presser foot 3 and the second presser foot 4 are installed, the lower ends of the first presser foot 3 and the second presser foot 4 in the matching groove 2 will be distributed in a front-to-back staggered manner along the width direction of the presser foot mounting seat 1, thereby increasing the pressing range of the presser foot mechanism and better meeting the different pressing needs of users.

[0030] In addition, the fabric to be sewn often has higher thickness on both sides and lower thickness in the middle. Therefore, except for the two matching grooves 2 located at the ends of the presser foot mounting seat 1 in the length direction, the remaining matching grooves 2 of the presser foot mounting seat 1 are all provided with a second presser foot 4 whose installation direction is opposite to the first presser foot 3, so as to better press the fabric in the middle layer position of the fabric to be sewn, and prevent the fabric in the middle layer position from being offset to the sewing position when the presser foot mechanism pulls the fabric to move because it cannot be pressed by the presser foot, so that the sewing machine can accurately sew the fabric.

[0031] In an optional embodiment, if Figure 2 and Figure 3 As shown in the figure, limit blocks 9 are provided at both ends of the presser foot mounting seat 1.

[0032] Among them, by setting limit blocks 9 at both ends of the presser foot mounting seat 1, the thickness of the fabric to be delivered to the bottom of the presser foot mechanism is limited, thereby preventing fabric with too thick thickness from being delivered to the bottom of the presser foot mechanism, and solving the problem that the presser foot mechanism cannot press the too thick fabric, causing the sewing machine to not work normally.

[0033] In an optional embodiment, if Figure 2 , Figure 7 and Figure 8 As shown in the figure, the bottom surfaces of the first presser foot 3 and the second presser foot 4 are both provided with a plurality of protrusions 10 .

[0034] Among them, the bottom surfaces of the first presser foot 3 and the second presser foot 4 are provided with a plurality of protrusions in a regular arrangement or an irregular arrangement. By providing the protrusions 10 at the bottom of the first presser foot 3 and the second presser foot 4 to provide additional support, it helps to stabilize the position of the fabric during the sewing process and prevent the fabric to be sewn from shifting during the sewing process.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A presser foot mechanism with multiple adaptive height presser feet, comprising: A presser foot mounting seat (1), characterized in that the presser foot mounting seat (1) is provided with a plurality of matching grooves (2) uniformly distributed along the length direction of the presser foot mounting seat (1), a first presser foot (3) is matched in the matching grooves (2) located at the ends of the length direction of the presser foot mounting seat (1), and a second presser foot (4) is matched in the remaining matching grooves (2) except for two matching grooves (2) located at the ends of the length direction of the presser foot mounting seat (1), a matching hole (5) is provided at the upper end of the first presser foot (3) and the upper end of the second presser foot (4), and the matching hole (5) is matched with a spring (6) extending into the matching groove (2), one end surface in the width direction of the presser foot mounting seat (1) is provided with a plurality of screw holes (7) uniformly distributed along the length direction of the presser foot mounting seat (1), the wall surfaces on both sides of the upper end of the first presser foot (3) and the wall surfaces on both sides of the upper end of the second presser foot (4) are provided with waist holes (8), and the screw holes (7) are respectively opposite to the waist holes on one side of the first presser foot (3) and the second presser foot (4).

2. A presser foot mechanism with multiple adaptive height presser feet according to claim 1, characterized in that: The first presser foot (3) and the second presser foot (4) have the same structure and are installed in opposite directions in the matching groove (2); the upper end of the first presser foot (3) is integrally formed on the top surface of the lower end of the first presser foot (3) in an eccentrically connected manner; and the distances from the lower end of the first presser foot (3) in the width direction of the presser foot mounting seat (1) to the upper end of the first presser foot (3) are unequal.

3. A presser foot mechanism with multiple adaptive height presser feet according to claim 2, characterized in that: The first presser foot (3) and the second presser foot (4) are distributed in a front-to-rear staggered manner in the width direction of the presser foot mounting seat (1).

4. A presser foot mechanism with multiple adaptive height presser feet according to claim 1, characterized in that: Limiting blocks (9) are provided at both ends of the presser foot mounting seat (1).

5. A presser foot mechanism with multiple adaptive height presser feet according to claim 1, characterized in that: The bottom surfaces of the first presser foot (3) and the second presser foot (4) are both provided with a plurality of protrusions (10).

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