TWM519152U - Presser foot auto-tuning structure of sewing machine - Google Patents

Description

Automatic adjustment structure of the presser foot of the sewing machine

The present invention relates to a self-adjusting structure of a presser foot of a sewing machine, in particular to a method of automatically adjusting the position of the thickness of the seam by using a plurality of movable platens to improve the leakage of the seam in the multi-needle seam.

The presser foot structure of the conventional sewing machine is designed to be integrated, so that the pressure of the presser foot on the pressed cloth surface is mostly constant, and the pressing force of the presser foot is pressed when the presser foot presses the multi-layered folded or overlapped seam. It is impossible to obtain an appropriate distribution effectively, so that the positioning of the seam is liable to cause unevenness and wrinkles during the feeding due to the material of the cloth and the thickness of the multilayer, which causes a problem of missing needles in the multi-needle sewing, so that the quality of the stitching is not good.

Later, the manufacturer developed a design that splits the presser foot into two sections, which can be determined by pressing the single or double section according to the area and thickness of the seam to improve the above-mentioned problem of uneven rolling pressure; In the case of multi-segmented seams, in practice, the double-section structure is still unable to be crushed on average, so there is still room for improvement.

At present, most of the solutions to the above production situation rely on the staff in the process of sewing. If the needle is missing, the sewing and re-sewing will be carried out. In order to maintain the quality of the sewing seam, the production efficiency and productivity will decrease, and the cost will increase. The lack of quality and so on, there are many inconveniences.

Therefore, how to make the presser foot smoothly press the seam is the purpose of the creation.

The present invention relates to a self-adjusting structure of a presser foot of a sewing machine. In order to achieve the above object and solve the conventional problem, the main feature of the present invention is a fixing seat, a presser foot having a plurality of grooves, and at least one movable pressing plate. The movable platen is correspondingly disposed in the slot, and a plurality of pinholes for the seam are set at the same distance between the presser foot plate and the movable platen, and elastic elements are respectively disposed between the fixed and the movable platen to make the movable platen A free end is formed below, and the displacement adjuster can be matched with the thickness of the seam.

Compared with the previous conventional structure, the creation can automatically adjust the appropriate position of the thickness of the seam through a plurality of movable pressing plates, and the pressure of the pressing force can be properly distributed, so that the sewing operation can greatly improve the loss caused by the missing needle. The cost and the purpose of improving the quality of the sewing. In order to facilitate the review of the technical means and the efficacy of the present invention in order to achieve the above objects and features, the preferred embodiments are illustrated with the following description.

1‧‧‧ fixed seat

11‧‧‧Foot plate

111‧‧‧through slot

112‧‧‧ shaft

12‧‧‧Active platen

121‧‧‧Flexible components

122‧‧‧Free end

123‧‧‧Perforation

124‧‧‧ 容容

13‧‧‧ pinhole

14‧‧‧ stitches

15‧‧‧ sewing

16‧‧‧ Positioning Department

161‧‧‧Positioning holes

The first picture is a perspective view of the creation.

Figure 2 is a schematic diagram of the assembly of this creation.

Figure 3 is a three-dimensional diagram of the creation.

Figure 4 is a side view of the active platen of this creation that has not been adjusted.

Figure 5 is a partial enlarged view of the active platen of this creation that has not been adjusted.

Figure 6 is a side view of the adjustment of the active platen of the present creation.

Figure 7 is a partial enlarged view of the active platen of the present creation.

In general, according to this creation, the best possible embodiment, together with the detailed description of the drawings, is to increase the understanding of the creation, and is not intended to limit the creation; see Figures 1 to 7, as shown in Figure 1 The present invention relates to a presser foot automatic adjusting structure for a sewing machine, which has a fixing base (1), and a presser foot plate (11) having a plurality of grooves (111) and at least one movable pressing plate are connected below the fixing seat (1). (12), the through slot (111) is mainly used to correspondingly set an equal number of movable pressure plates (12), and between the presser foot plate (11) and the movable pressure plate (12), several times for the sewing is set at the same distance. a pinhole (13), and at least one or more elastic members (121) are respectively disposed between the fixing base (1) and the movable platen (12), so that a free end (122) is formed under the movable platen (12). It can be adjusted to an appropriate position by the thickness of the seam (15) in combination with the elastic member (121).

Referring to FIG. 1 to FIG. 2, the presser foot plate (11) is provided with a positioning portion (16) on each of the left and right sides of the plurality of slots (111), and the positioning portion (16) is provided for A plurality of positioning holes (161) are connected to the fixing base (1) and the movable pressing plate (12), and each positioning hole (161) is a circular hole, which is inserted through a corresponding number of shafts (112) to allow the fixing seat (1) can be coupled with the presser foot plate (11) and the movable platen (12); wherein each movable platen (12) is provided with a receiving groove (124), the receiving groove (124) is mainly used for arranging at least one or more The elastic member (121) is a spring in the embodiment, but is not limited thereto; and a pinhole (13) is provided between the presser plate (11) and the movable platen (12). Each pinhole (13) is set by the same distance, and can be adjusted with the number of needles (14) 1~12, or more The number of needles (14) is not limited to the one shown in the figure.

Referring again to Figures 3 to 7, when the seam (15) does not sew the protruding portion, the free end (122) below the presser foot plate (11) is fitted to the seam (15). a state in which the movable platen (12) is restricted by the elastic member (121) in parallel with the presser plate (11); and when the plurality of slits are folded to have a certain thickness of the slit (15), the movable platen (12) is subjected to The thickness of the seam (15) is pushed. Since the perforation (123) of the movable platen (12) is an elliptical design, it can be restricted by the shaft (112), and the movable platen (12) is displaced up and down. (15) After the sewing is completed, the movable platen (12) is reset in parallel with the presser plate (11).

In summary, the feed adjusting device of the sewing machine of the present invention is provided with a plurality of movable pressing plates (12) capable of adjusting the displacement of the elastic member (121) by the through grooves (111) in the presser foot plate (11), and Between the presser foot plate (11) and the movable platen (12), pinholes (13) for sewing a plurality of stitches (14) are provided at equal intervals, thereby allowing the movable platen (12) to be sewn When the thickness of the multi-segment (15) is used, the optimal position can be automatically adjusted to achieve a smooth compression of the seam (15), so that the needles produced by the conventional multi-needle are not flat and the wrinkles are completely improved. The purpose.

1‧‧‧ fixed seat

11‧‧‧Foot plate

111‧‧‧through slot

112‧‧‧ shaft

12‧‧‧Active platen

13‧‧‧ pinhole

16‧‧‧ Positioning Department

161‧‧‧Positioning holes

Claims (3)

The automatic adjusting structure of the presser foot of the sewing machine comprises: a fixing seat, a presser foot plate having a plurality of grooves and a movable platen at least one, and a movable pressing plate corresponding to the movable platen, and the pressing plate and the movable pressing plate a plurality of pinholes for sewing are provided at the same distance, and elastic members are respectively disposed between the fixing seat and the movable platen, so that a free end is formed under the movable platen, and the displacement can be adjusted according to the thickness of the seam. By. For example, the automatic presser foot adjustment structure of the sewing machine of claim 1 wherein the movable platen further comprises: a plurality of perforations disposed on the left and right sides of the movable platen; and a plurality of shafts for piercing The perforation joins the movable platen, thereby limiting the displacement action of the movable platen. The automatic adjustment structure of the presser foot of the sewing machine according to the second aspect of the patent application, wherein the perforation has an elliptical design, and the movable platen can be moved vertically.