CN219174750U - Feed dog - Google Patents

Abstract

The utility model provides a cloth feeding tooth, which comprises a main body and a plurality of first saw-tooth arms arranged on the main body, wherein the first saw-tooth arms are parallel to each other, a space is reserved between two adjacent first saw-tooth arms, second saw-tooth arms are respectively connected to the first saw-tooth arms positioned at the edges of two sides of the main body, at least one third saw-tooth arm connected with the first saw-tooth arms is further arranged between the two second saw-tooth arms, the second saw-tooth arms and the third saw-tooth arms are parallel to the first saw-tooth arms and extend along the direction deviating from the main body, and a plurality of saw teeth for conveying cloth are uniformly arranged on the first saw-tooth arms, the second saw-tooth arms and the third saw-tooth arms. Through add second sawtooth arm and third sawtooth arm on first sawtooth arm, effectively increased the interlock area with the cloth under the circumstances that avoids taking place to interfere with other spare parts of sewing machine, and then improved the interlock force to the cloth to realized the steady pay-off to thick cloth.

Description

Feed dog

Technical Field

The utility model relates to the technical field of sewing, in particular to a feed dog.

Background

The sewing machine always needs to feed by using a feed dog when working, and the work process of the feed dog is that after a needle withdraws from a sewing material, the feed dog rises to expose a needle plate, then moves forwards, and together with a presser foot, the sewing material is clamped to a needle distance required position, then descends to an original position, and simultaneously the needle moves downwards to complete sewing of the needle. The feed dog moves by a composite motion of a front-back motion and an up-down motion of the feed dog, and feeds under the cooperation of the presser foot and the needle plate.

In the prior art, a feed dog of a sewing machine (such as a flat seaming machine) is generally composed of a main body and a plurality of sawtooth arms uniformly distributed on the main body, and the contact surface between the feed dog and cloth is less, so that the friction force between the feed dog and the cloth is smaller, and for thicker cloth, the feed dog cannot be smoothly conveyed.

Disclosure of Invention

The utility model aims to provide a feed dog, which solves the problem that in the prior art, the contact surface between the feed dog of a sewing machine and cloth is less, so that the friction force between the feed dog and the cloth is smaller, and smooth conveying cannot be realized.

In order to achieve the above object, the present utility model provides a feeding tooth, including a main body and a plurality of first saw-tooth arms disposed on the main body, wherein the plurality of first saw-tooth arms are parallel to each other and have a space between two adjacent first saw-tooth arms, the first saw-tooth arms disposed on two side edges of the main body are respectively connected with a second saw-tooth arm, at least one third saw-tooth arm connected with the first saw-tooth arm is further disposed between the two second saw-tooth arms, the second saw-tooth arm and the third saw-tooth arm are parallel to the first saw-tooth arms and extend along a direction deviating from the main body, and a plurality of saw teeth for conveying cloth are uniformly arranged on the first saw-tooth arms, the second saw-tooth arms and the third saw-tooth arms.

Optionally, the third sawtooth arms are at least two and symmetrically arranged about the center line of the main body.

Optionally, the second saw tooth arm and the third saw tooth arm have the same length.

Optionally, the width of the second sawtooth arm is the same as the width of the third sawtooth arm and is smaller than the width of the first sawtooth arm.

Optionally, the width of the second sawtooth arm and the third sawtooth arm is not greater than half the width of the first sawtooth arm.

Optionally, the thicknesses of the second sawtooth arm and the third sawtooth arm gradually decrease toward a direction away from the main body.

Optionally, an end of the first sawtooth arm near the main body has a concave cambered surface.

Optionally, the saw teeth on the first saw tooth arm, the second saw tooth arm and the third saw tooth arm are all inclined.

Optionally, the saw teeth are inclined at 45 degrees.

Optionally, the feed dog is integrally formed.

The utility model provides a cloth feeding tooth, which comprises a main body and a plurality of first saw-tooth arms arranged on the main body, wherein the first saw-tooth arms are parallel to each other, a space is reserved between two adjacent first saw-tooth arms, second saw-tooth arms are respectively connected to the first saw-tooth arms positioned at the edges of two sides of the main body, at least one third saw-tooth arm connected with the first saw-tooth arms is further arranged between the two second saw-tooth arms, the second saw-tooth arms and the third saw-tooth arms are parallel to the first saw-tooth arms and extend along the direction deviating from the main body, and a plurality of saw teeth for conveying cloth are uniformly arranged on the first saw-tooth arms, the second saw-tooth arms and the third saw-tooth arms. According to the utility model, the second saw tooth arm and the third saw tooth arm are additionally arranged on the first saw tooth arm, so that the biting area of the cloth is effectively increased under the condition of avoiding interference with other parts of the sewing machine, and the biting force of the cloth is further improved, and therefore, stable feeding of different cloths, particularly thick cloths, is realized.

Drawings

Those of ordinary skill in the art will appreciate that the figures are provided for a better understanding of the present utility model and do not constitute any limitation on the scope of the present utility model. Wherein:

FIG. 1 is a front view of a feed dog according to an embodiment of the present utility model;

fig. 2 is a side view of a feed dog according to an embodiment of the present utility model.

In the accompanying drawings:

1-a main body; 2-a first saw tooth arm; 3-a second saw tooth arm; 4-a third saw tooth arm; 5-avoiding grooves; 6-concave cambered surface.

Detailed Description

The utility model will be described in further detail with reference to the drawings and the specific embodiments thereof in order to make the objects, advantages and features of the utility model more apparent. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the utility model. For a better understanding of the utility model with objects, features and advantages, refer to the drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the present disclosure for the understanding and reading of the present disclosure, and are not intended to limit the scope of the utility model, which is defined by the appended claims, and any structural modifications, proportional changes, or dimensional adjustments, which may be made by the present disclosure, should fall within the scope of the present disclosure under the same or similar circumstances as the effects and objectives attained by the present utility model.

As used in this disclosure, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this disclosure, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise. As used in this disclosure, the term "plurality" is generally employed in its sense including "at least one" unless the content clearly dictates otherwise. As used in this disclosure, the term "at least two" is generally employed in its sense including "two or more", unless the content clearly dictates otherwise. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", "a third" may include one or at least two such features, either explicitly or implicitly.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-2, fig. 1 is a front view of a feed dog according to an embodiment of the present utility model; fig. 2 is a side view of a feed dog according to an embodiment of the present utility model. The embodiment provides a feed dog, including main part 1 and setting are in a plurality of first sawtooth arm 2 on the main part 1, a plurality of first sawtooth arm 2 are parallel to each other and adjacent two have the interval between the first sawtooth arm 2, be located be connected with second sawtooth arm 3 on the first sawtooth arm 2 of the both sides edge of main part 1 respectively, two still be provided with at least one with the third sawtooth arm 4 that first sawtooth arm 2 is connected between the second sawtooth arm 3, second sawtooth arm 3 with third sawtooth arm 4 all with first sawtooth arm 2 is parallel to each other and follows the direction extension of deviating from main part 1, first sawtooth arm 2 second sawtooth arm 3 with evenly arranged has a plurality of sawtooth that are used for carrying the cloth on the third sawtooth arm 4.

According to the utility model, the second saw tooth arm 3 and the third saw tooth arm 4 are additionally arranged on the first saw tooth arm 2, so that the biting area of the cloth is effectively increased under the condition of avoiding interference with other parts of the sewing machine, and the biting force of the cloth is further improved, thereby realizing stable feeding of thick cloth.

It should be understood that, when the multi-needle sewing machine works, the needles will pass through the space between the adjacent third saw tooth arms 4, so that the number and distribution of the third saw tooth arms 4 can be designed according to the distribution of the needles, and the design principle is that more third saw tooth arms 4 are arranged as much as possible without affecting the sewing of the needles, so as to further increase the engagement area of the feed dog and the cloth. Therefore, the number and distribution of the third saw-tooth arms 4 are not limited in this application.

Specifically, in this embodiment, an avoidance groove 5 is formed in the middle of the main body 1, and the avoidance groove 5 is mainly used for matching with a needle plate of the sewing machine, so that an avoidance space is formed, and the adjacent first saw tooth arms 2 are equally spaced, so as to match with the structure of the needle plate, and play a role in avoiding the space. The width and depth of the avoiding groove 5 and the distance are not particularly limited, and can be adjusted according to requirements.

Preferably, the third saw-tooth arms 4 are at least two and symmetrically disposed about the center line of the main body 1, that is, the third saw-tooth arms 4 located at two sides of the avoidance groove 5 are symmetrical about the avoidance groove 5. Through adopting the mode of symmetry, on the one hand can be convenient for whole feed dog can the atress balanced, improve structural stability, on the other hand also can be convenient for process, promote the whole aesthetic property of feed dog. In this embodiment, the number of the third saw-tooth arms 4 is four.

Preferably, the second saw tooth arm 3 and the third saw tooth arm 4 have the same length, so that the processing is convenient, and the overall aesthetic property of the feed dog is improved.

Preferably, the width of the second saw-tooth arm 3 is the same as the width of the third saw-tooth arm 4 and smaller than the width of the first saw-tooth arm 2. The design is mainly to avoid the problem that the second saw tooth arm 3 and the third saw tooth arm 4 have excessive widths, so that the feed dog is easy to interfere with other parts of the sewing machine when moving.

In this embodiment, the widths of the second saw-tooth arm 3 and the third saw-tooth arm 4 are not greater than half the width of the first saw-tooth arm 2. Of course, the specific widths of the second saw tooth arm 3 and the third saw tooth arm 4 are not limited in the present application, and may be adjusted according to the requirements.

Preferably, the thicknesses of the second saw-tooth arm 3 and the third saw-tooth arm 4 gradually decrease in a direction away from the main body 1. The design is also in order to avoid the problem that the second saw tooth arm 3 and the third saw tooth arm 4 are too thick, so that the feed dog is easy to interfere with other parts of the sewing machine when moving, on the other hand, the second saw tooth arm 3 and the third saw tooth arm 4 can be thinned, the occupied space is reduced, and the compactness of the structure is improved.

Preferably, the end of the first sawtooth arm 2 near the main body 1 has a concave cambered surface 6. By designing the end of the first saw-tooth arm 2, which is close to the main body 1, as a concave cambered surface 6, on one hand, the feed dog can avoid a needle plate of the sewing machine when moving, and on the other hand, the structural aesthetic property of the feed dog can be improved.

Preferably, the saw teeth on the first saw tooth arm 2, the second saw tooth arm 3 and the third saw tooth arm 4 are all inclined, so that the cloth can be conveyed better.

Further preferably, the saw teeth are arranged at an angle of 45 °.

Preferably, the feed dog is integrally formed, such as by a machining lathe, so that the structural stability is better.

In summary, the embodiment of the utility model provides a feeding tooth, which comprises a main body 1 and a plurality of first saw-tooth arms 2 arranged on the main body 1, wherein the first saw-tooth arms 2 are parallel to each other, a space is reserved between two adjacent first saw-tooth arms 2, the first saw-tooth arms 2 positioned at the two side edges of the main body 1 are respectively connected with a second saw-tooth arm 3, at least one third saw-tooth arm 4 connected with the first saw-tooth arms 2 is further arranged between the two second saw-tooth arms 3, the second saw-tooth arms 3 and the third saw-tooth arms 4 are parallel to the first saw-tooth arms 2 and extend along the direction deviating from the main body 1, and a plurality of saw teeth for conveying cloth are uniformly arranged on the first saw-tooth arms 2, the second saw-tooth arms 3 and the third saw-tooth arms 4. According to the utility model, the second saw tooth arm 3 and the third saw tooth arm 4 are additionally arranged on the first saw tooth arm 2, so that the biting area of the cloth is effectively increased under the condition of avoiding interference with other parts of the sewing machine, and the biting force of the cloth is further improved, thereby realizing stable feeding of thick cloth.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the present utility model. It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, the present utility model is intended to include such modifications and alterations insofar as they come within the scope of the utility model or the equivalents thereof.

Claims (10)

1. The utility model provides a feed dog, its characterized in that includes the main part and sets up a plurality of first sawtooth arm in the main part, a plurality of first sawtooth arm are parallel to each other and adjacent two have the interval between the first sawtooth arm, be located be connected with the second sawtooth arm on the first sawtooth arm of main part both sides edge respectively, two still be provided with at least one with the third sawtooth arm that first sawtooth arm is connected between the second sawtooth arm, the second sawtooth arm with the third sawtooth arm all with first sawtooth arm is parallel to each other and extends along the direction of deviating from the main part, first sawtooth arm the second sawtooth arm and evenly arranged has a plurality of sawtooth that are used for carrying the cloth on the third sawtooth arm.

2. The feed dog of claim 1, wherein the third saw tooth arms are at least two and symmetrically disposed about a centerline of the body.

3. The feed dog of claim 1, wherein the second saw tooth arm is the same length as the third saw tooth arm.

4. The feed dog of claim 1, wherein the second saw tooth arm is the same width as the third saw tooth arm and is less than the width of the first saw tooth arm.

5. The feed dog of claim 4, wherein the width of the second and third saw tooth arms is no greater than half the width of the first saw tooth arm.

6. The feed dog of claim 1, wherein the thickness of the second and third saw tooth arms decreases progressively in a direction away from the body.

7. The feed dog of claim 1, wherein an end of the first serrated arm adjacent the body has a concave arcuate surface.

8. The feed dog of claim 1, wherein the teeth on the first, second, and third saw tooth arms are all inclined.

9. The feed dog of claim 8, wherein the serrations are provided at a 45 ° incline.

10. The feed dog of claim 1, wherein the feed dog is integrally formed.

Images