Sewing machine presser foot device capable of reducing leather abrasion

Abstract

The utility model discloses a sewing machine presser foot device capable of reducing leather abrasion, and belongs to the technical field of automotive interiors. The presser foot device of the sewing machine mainly comprises a mounting unit, a first convex tooth group and a varnish coating, wherein the working surface of the mounting unit is provided with a mounting hole, and the mounting hole is used for connecting the sewing machine presser foot device with a connecting assembly in a sewing machine main body; the first convex tooth set is composed of a plurality of convex teeth, the convex teeth in the first convex tooth set are arranged on the working face of the installation unit in a linear array mode in the length direction of the installation unit, and the first convex tooth set is far away from the installation hole. The first convex tooth set is coated with a varnish coating, and the coating enables the working face of the presser foot device of the sewing machine to be in smooth contact with leather so that indentation can be avoided. Compared with the prior art, the probability that leather is abraded and scratched can be reduced, the delivery cycle of a corresponding order can be met to a certain degree, and therefore practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of automotive interior technology, and in particular to a sewing machine presser foot device for reducing leather wear. Background Technology

[0002] In the mass production of car seat covers, the bottom of the presser foot of existing sewing machines is usually equipped with several rigid tooth structures. Although this design can effectively prevent the leather from shifting during high-speed sewing, in actual industrial production scenarios, the rigid contact between the teeth and the leather can easily cause quality problems such as surface wear and interlayer peeling.

[0003] In addition, while operators can alleviate wear and tear by actively reducing their operating speed, the decrease in sewing efficiency may disrupt the production cycle, thereby leading to an extension of the order delivery cycle. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a sewing machine presser foot device for reducing leather wear, primarily comprising a mounting unit, a first tooth assembly, and a varnish coating. Under the action of the varnish coating, the working surface of this presser foot device can smoothly contact the leather, avoiding indentations. Compared to existing technologies, this invention reduces the probability of leather being worn and scratched, and to a certain extent, can meet the delivery cycle of corresponding orders; therefore, it has high practicality.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Sewing machine presser foot devices that reduce leather wear include:

[0007] The mounting unit has a mounting hole on its working surface, which is used to connect the sewing machine presser foot device to a connecting component of a sewing machine body.

[0008] The first tooth group consists of a plurality of teeth. The teeth in the first tooth group are arranged in a linear array along the length direction of the mounting unit on the working surface of the mounting unit, and the first tooth group is far away from the mounting hole.

[0009] in,

[0010] The first set of protruding teeth is coated with a varnish coating; this coating allows the working surface of the sewing machine presser foot device to smoothly contact the leather without causing indentations.

[0011] Furthermore,

[0012] The first set of protruding teeth is located near the edge of the mounting unit in the width direction; and / or

[0013] An arc-shaped groove is provided at the end of the mounting unit along its length, and the arc-shaped groove is far away from the mounting hole.

[0014] Furthermore, the sewing machine presser foot device also includes:

[0015] The first partition plate has one side in the width direction connected to one side in the width direction of the mounting unit, and the first partition plate is close to the first tooth group.

[0016] The first upright plate has one side in the width direction connected to the other side in the width direction of the first partition plate, and the height of the first upright plate is equal to the thickness of the mounting unit, and the length of the first upright plate is less than the length of the mounting unit.

[0017] The second tooth group consists of several teeth. The teeth in the second tooth group are arranged in a linear array along the length direction of the first vertical plate on the working surface of the first vertical plate. The second tooth group is coated with the varnish coating.

[0018] In use, the working end of the sewing machine needle in the main body is parallel to the length direction of the first upright plate, and there is a certain distance between the working end of the sewing machine needle and the end of the first upright plate facing the mounting hole.

[0019] Furthermore, the sewing machine presser foot device also includes:

[0020] The first slot is located on the side of the mounting unit near the first partition plate;

[0021] A first locking block is disposed on the side of the first partition plate near the mounting unit. The first locking block is adapted to the first locking slot, meaning the first partition plate can be snapped onto the mounting unit; and / or

[0022] A first semi-circular groove is formed at the end of the first spacer plate facing the mounting hole.

[0023] Furthermore, the sewing machine presser foot device also includes:

[0024] The second partition plate has one side in the width direction connected to the other side in the width direction of the first vertical plate;

[0025] The second upright plate has one side in the width direction connected to the other side in the width direction of the second partition plate, and the height of the second upright plate is equal to the thickness of the mounting unit.

[0026] The third tooth group consists of several teeth. The teeth in the third tooth group are arranged in a linear array along the length direction of the second vertical plate on the working surface of the second vertical plate. The third tooth group is coated with the varnish coating.

[0027] Furthermore, the length of the second upright plate is greater than the length of the first upright plate.

[0028] Furthermore, the sewing machine presser foot device also includes:

[0029] The second slot is located on the side of the first upright plate near the second partition plate;

[0030] The second locking block is disposed on the side of the second partition plate near the first upright plate. The second locking block is adapted to the second locking slot, that is, the second partition plate can be locked onto the first upright plate; and / or

[0031] The second semi-circular groove is formed at the end of the second spacer plate facing the mounting hole.

[0032] Furthermore,

[0033] The thickness of the first spacer is less than the thickness of the mounting unit, meaning there is a certain distance between the end face of the first spacer facing the working surface of the mounting unit and the protruding tooth; and / or

[0034] The thickness of the second spacer is less than the thickness of the mounting unit, that is, there is a certain distance between the end face of the second spacer facing the working surface of the mounting unit and the protruding tooth.

[0035] Furthermore, the protruding teeth are oblique triangular in shape.

[0036] Furthermore, the protruding teeth are trapezoidal in shape.

[0037] The beneficial effects of this utility model are:

[0038] The sewing machine presser foot device for reducing leather wear provided by this utility model is equipped with a first tooth group. The first tooth group is coated with a varnish water coating and baked at high temperature. The end of the first tooth group is blunted, so that the working end of the sewing machine presser foot device can smoothly contact the leather. This design can reduce the probability of leather being worn and scratched, and can meet the corresponding order delivery cycle to a certain extent; at the same time, it can also avoid the formation of indentations on the leather. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the partial assembly structure of the present invention and the sewing machine body;

[0040] Figure 2 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0041] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0042] Figure 4 This is an exploded view of part of the structure of the second embodiment of the present invention. Figure 3 Another perspective);

[0043] Figure 5 This is a schematic diagram of the structure of the third embodiment of the present utility model;

[0044] Figure 6 This is an exploded view of a portion of the structure of the third embodiment of the present invention. Figure 5 Another perspective);

[0045] Figure 7 This is a structural schematic diagram of the third embodiment of the present invention in a specific application scenario.

[0046] Figure label:

[0047] 1. Sewing machine body; 11. Connecting components; 12. Needle;

[0048] 2. Mounting unit; 21. Mounting hole; 22. Arc-shaped groove; 23. First slot;

[0049] 3. First set of convex teeth;

[0050] 41. First partition plate; 42. First semi-circular groove; 43. First locking block;

[0051] 51. First upright plate; 52. Second slot;

[0052] 6. Second set of convex teeth;

[0053] 71. Second partition plate; 72. Second semi-circular groove; 73. Second locking block;

[0054] 8. Second upright board;

[0055] 9. Third convex tooth group. Detailed Implementation

[0056] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0057] Example 1

[0058] As attached Figure 1 and appendix Figure 2As shown, this embodiment discloses a sewing machine presser foot device for reducing leather wear, used to reduce the probability of leather being worn and scratched. It mainly includes a mounting unit 2, a first toothed assembly 3, and a varnish coating, also known as a clear varnish. In use, the mounting unit 2 is first connected to the connecting assembly 11 of the sewing machine body 1 through the mounting hole 21; typically, the connecting assembly 11 is equipped with bolts, i.e., the sewing machine body 1 and the mounting unit 2 are bolted together; then, one end of the thread (not marked in the figure) is passed through the hole (not marked in the figure) on the needle 12; at this time, the working end of the needle 12 is located above the first toothed assembly 3 and behind the first toothed assembly 3, as shown in the attached figure. Figure 1 As shown, when the leather is pressed by the first tooth group 3, it is convenient for the needle 12 to sew the leather. In addition, the first tooth group 3 is coated with a varnish coating. The coating is baked and the end of the first tooth group 3 is blunted, so that the working end of the sewing machine presser foot device can smoothly contact the leather and avoid indentation, thereby reducing the probability of the leather being worn and scratched.

[0059] The specific structure of the sewing machine presser foot device for reducing leather wear is as follows: It includes a mounting unit 2, the working surface of which has a mounting hole 21 for connecting the sewing machine presser foot device to a connecting component 11 in a sewing machine body 1; a first tooth group 3 is composed of several teeth, which are linearly arrayed along the length of the mounting unit 2 on the working surface of the mounting unit 2, and the first tooth group 3 is located away from the mounting hole 21; the first tooth group 3 is coated with a varnish coating, which allows the working surface of the sewing machine presser foot device to smoothly contact the leather without causing indentations. Compared with the prior art, this utility model can reduce the probability of leather being worn and scratched, and can meet the corresponding order delivery cycle to a certain extent, thus having high practicality.

[0060] In a specific application scenario, as shown in the appendix Figure 2 As shown, the first tooth group 3 is close to the edge of the mounting unit 2 in the width direction. This design can improve the sewing effect of the needle 12 on the leather.

[0061] In a specific application scenario, as shown in the appendix Figure 2 As shown, the right end of the mounting unit 2 is provided with an arc-shaped groove 22. This design allows the right end of the mounting unit 2 to come into contact with the leather more smoothly.

[0062] Example 2

[0063] As attached Figure 3 and appendix Figure 4As shown, this embodiment discloses a sewing machine presser foot device for reducing leather wear, used to improve the efficiency of sewing leather in Embodiment 1. In addition to the components in Embodiment 1, it also includes: a first partition plate 41, a first upright plate 51, and a second tooth group 6. Specifically, the rear side of the first partition plate 41 in the width direction is connected to the front side of the mounting unit 2 in the width direction, and the first partition plate 41 is close to the first tooth group 3. The first upright plate 51 is provided on the front side of the first partition plate 41 in the width direction, and the height of the first upright plate 51 is equal to the thickness of the mounting unit 2, and the length of the first upright plate 51 is less than the length of the mounting unit 2. The second tooth group 6 consists of a plurality of teeth, and the teeth in the second tooth group 6 are aligned with the first upright plate 51. A linear array along the length direction is set on the working surface of the first upright plate 51, and the second tooth group 6 is coated with a varnish coating. In use, the working end of the needle 12 in the sewing machine body 1 is parallel to the length direction of the first upright plate 51, and there is a certain distance between the working end of the needle 12 and the end of the first upright plate 51 facing the mounting hole 21, that is, there is a certain distance between the working end of the needle 12 and the left end of the first upright plate 51. This design allows the operator to clearly see the current spacing of the leather being sewn, so that the operator can have a clear understanding of the sewing results. At the same time, the first tooth group 3 and the second tooth group 6 press the leather, which can reduce the probability of the leather going off-center and improve the efficiency of sewing leather to a certain extent.

[0064] In a specific application scenario, as shown in the appendix Figure 4 As shown, the mounting unit 2 has two first slots 23 on its side near the first partition plate 41; the first partition plate 41 has two first blocks 43 on its side near the mounting unit 2. These first blocks 43 are adapted to the first slots 23, meaning the first partition plate 41 can be snapped onto the mounting unit 2. In use, operators can replace the first partition plate 41 with different sizes according to their needs. Of course, the number of first slots 23 and first blocks 43 can be adjusted according to the operator's requirements, but the number of first slots 23 and first blocks 43 must match. Specific details are not elaborated here. Additionally, the left end of the first partition plate 41 has a first semi-circular groove 42. This design improves the smoothness of contact with the leather in this embodiment and reduces the probability of leather wear to some extent.

[0065] Example 3

[0066] As attached Figure 5-7As shown, this embodiment discloses a sewing machine presser foot device to reduce leather wear, which is used to improve the efficiency of sewing leather in Embodiment 2. In addition to the components in Embodiment 2, it also includes: a second partition plate 71, a second upright plate 8, and a third tooth group 9. Specifically, the rear side of the second partition plate 71 in the width direction is connected to the front side of the first upright plate 51 in the width direction; the second upright plate 8 is provided on the front side of the second partition plate 71 in the width direction, and the height of the second upright plate 8 is equal to the thickness of the mounting unit 2; the third tooth group 9 is composed of a number of teeth, and the teeth in the third tooth group 9 are arranged in a linear array along the length direction of the second upright plate 8 on the working surface of the second upright plate 8. The third tooth group 9 is coated with a varnish coating. This design allows the worker to clearly see the sewing spacing of three adjacent rows of leather, so that the worker can have a clear understanding of the sewing results; at the same time, the first tooth group 3, the second tooth group 6, and the third tooth group 9 press the leather together, which can reduce the probability of the leather deviating and improve the efficiency of sewing leather in this embodiment to a certain extent.

[0067] In a specific application scenario, the length of the second upright plate 8 is greater than the length of the first upright plate 51. This design can reduce the probability of leather wrinkling.

[0068] In a specific application scenario, as shown in the appendix Figure 6 As shown, the first upright plate 51 has two second slots 52 on its side near the second partition plate 71; the second partition plate 71 has a second locking block 73 on its side near the first upright plate 51. The second locking block 73 is adapted to the second slots 52, that is, the second partition plate 71 can be locked onto the first upright plate 51. When the worker replaces the first partition plate 41, the second partition plate 71 also needs to be replaced. Otherwise, the following situation may occur: the first partition plate 41 with a spacing of A is locked onto the mounting unit 2, and the second partition plate 71 with a spacing of B is locked onto the first upright plate 51 with a spacing of A. Due to the difference in these two spacings and the worker's long-term sewing, visual fatigue may occur. At this time, it will generally affect the sewing efficiency and sewing effect. In addition, the left end of the second partition plate 71 has a second semi-circular groove 72. This design can improve the smoothness of contact with the leather in this embodiment and reduce the probability of the leather being worn to a certain extent. Of course, the number of the second card slot 52 and the second card block 73 can be adjusted according to the needs of the staff, but it is necessary to ensure that the number of the second card slot 52 and the second card block 73 must match. The specific details will not be elaborated here.

[0069] Furthermore, the thickness of the first partition plate 41 is less than the thickness of the mounting unit 2, that is, there is a certain distance between the end face of the first partition plate 41 facing the working surface of the mounting unit 2 and the protruding teeth; the thickness of the second partition plate 71 is less than the thickness of the mounting unit 2, that is, there is a certain distance between the end face of the second partition plate 71 facing the working surface of the mounting unit 2 and the protruding teeth. This design can reduce the workload of the sewing machine body 1.

[0070] In a specific application scenario, the protruding teeth are in the shape of oblique triangles. This design can reduce the sliding friction between the leather and this embodiment; at the same time, it can guide the leather to move evenly, thereby improving the stability of the sewing stitch.

[0071] Alternatively, the staff can change the aforementioned triangular protrusions into trapezoidal protrusions, as shown in the attached figure. Figure 7 As shown, it can enhance the gripping force on the fabric through a larger contact area and uniform pressure distribution. Of course, workers can choose different solutions according to their needs, as long as they can achieve their goals. In actual use, due to the setting of the arc-shaped groove 22, the first semi-circular groove 42 and the second semi-circular groove 72, the probability of workers being scratched when picking up the installation unit 2, the first partition plate 41 and the second partition plate 71 can be reduced to a certain extent, ensuring a certain level of production safety.

[0072] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” and “the” used in this invention may also include the plural forms. It should be further understood that the term “comprising” as used in this invention means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is “connected” or “coupled” to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, “connected” or “coupled” as used herein can include wireless connections or wireless coupling. The term “and / or” as used herein includes all or any units and all combinations of one or more associated listed items.

Claims

1. A sewing machine presser foot device for reducing leather wear, characterized in that, include: The mounting unit (2) has a mounting hole (21) on its working surface. The mounting hole (21) is used to connect the sewing machine presser foot device to a connecting component (11) of a sewing machine body (1). The first tooth group (3) consists of a number of teeth. The teeth in the first tooth group (3) are arranged in a linear array along the length direction of the mounting unit (2) on the working surface of the mounting unit (2), and the first tooth group (3) is far away from the mounting hole (21). The first tooth group (3) is coated with a varnish coating. This coating allows the working surface of the sewing machine presser foot device to smoothly contact the leather and avoid indentation.

2. The sewing machine presser foot device for reducing leather wear according to claim 1, characterized in that: The first tooth group (3) is close to the edge of the mounting unit (2) in the width direction; and / or the end of the mounting unit (2) in the length direction is provided with an arc-shaped groove (22), and the arc-shaped groove (22) is far away from the mounting hole (21).

3. The sewing machine presser foot device for reducing leather wear according to claim 2, characterized in that, Also includes: The first partition plate (41) has one side of its width direction connected to one side of the mounting unit (2) in the width direction, and the first partition plate (41) is close to the first tooth group (3); the first upright plate (51) has one side of its width direction connected to the other side of the width direction of the first partition plate (41), and the height of the first upright plate (51) is equal to the thickness of the mounting unit (2), and the length of the first upright plate (51) is less than the length of the mounting unit (2); the second tooth group (6) is composed of several teeth, and the teeth in the second tooth group (6) are arranged linearly along the length direction of the first upright plate (51) on the working surface of the first upright plate (51), and the second tooth group (6) is coated with the varnish coating; in use, the working end of the needle (12) in the sewing machine body (1) is parallel to the length direction of the first upright plate (51), and there is a certain distance between the working end of the needle (12) and the end of the first upright plate (51) facing the mounting hole (21).

4. The sewing machine presser foot device for reducing leather wear according to claim 3, characterized in that, Also includes: A first slot (23) is provided on the side of the mounting unit (2) near the first partition plate (41); a first locking block (43) is provided on the side of the first partition plate (41) near the mounting unit (2), the first locking block (43) is adapted to the first slot (23), that is, the first partition plate (41) can be locked on the mounting unit (2); and / or a first semi-circular groove (42) is provided at the end of the first partition plate (41) facing the mounting hole (21).

5. The sewing machine presser foot device for reducing leather wear according to claim 3 or claim 4, characterized in that, Also includes: The second partition plate (71) has one side in its width direction connected to the other side in the width direction of the first upright plate (51); the second upright plate (8) has one side in its width direction connected to the other side in the width direction of the second partition plate (71), and the height of the second upright plate (8) is equal to the thickness of the mounting unit (2); the third tooth group (9) is composed of several teeth, and the teeth in the third tooth group (9) are arranged in a linear array along the length direction of the second upright plate (8) on the working surface of the second upright plate (8), and the third tooth group (9) is coated with the varnish coating.

6. The sewing machine presser foot device for reducing leather wear according to claim 5, characterized in that, The length of the second upright plate (8) is greater than the length of the first upright plate (51).

7. The sewing machine presser foot device for reducing leather wear according to claim 5, characterized in that, It also includes: a second slot (52) provided on the side of the first upright plate (51) near the second partition plate (71); a second locking block (73) provided on the side of the second partition plate (71) near the first upright plate (51), the second locking block (73) being adapted to the second slot (52), that is, the second partition plate (71) can be locked onto the first upright plate (51); and / or a second semi-circular groove (72) provided on the end of the second partition plate (71) facing the mounting hole (21).

8. The sewing machine presser foot device for reducing leather wear according to claim 6 or claim 7, characterized in that: The thickness of the first spacer plate (41) is less than the thickness of the mounting unit (2), that is, there is a certain distance between the end face of the first spacer plate (41) facing the working surface of the mounting unit (2) and the protruding tooth; and / or the thickness of the second spacer plate (71) is less than the thickness of the mounting unit (2), that is, there is a certain distance between the end face of the second spacer plate (71) facing the working surface of the mounting unit (2) and the protruding tooth.

9. The sewing machine presser foot device for reducing leather wear according to any one of claims 1-4, 6, or 7, characterized in that, The protruding teeth are oblique triangular in shape.

10. The sewing machine presser foot device for reducing leather wear according to any one of claims 1-4, 6, or 7, characterized in that, The protruding teeth are trapezoidal in shape.

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