Embroidery machine head with mute presser foot

Abstract

An embroidery machine head with a mute presser foot comprises a machine head shell of an embroidery machine, the machine head shell is connected with a needle bar frame in a matched mode, the needle bar frame is provided with a presser foot needle bar connected with the presser foot, the presser foot needle bar is connected with a lifting and pressing sleeve, the lifting and pressing sleeve is installed on a presser foot driver of a driving shaft in a matched mode, and the side edge of the presser foot driver is connected with a rubber pad through a connecting piece. The rubber pad is of an annular structure, the annular structure comprises a horizontal bottom face, the two sides of the horizontal bottom face surround upwards to form arc-shaped protruding rings, an inner circular ring protruding inwards is arranged in the annular structure, and the two sides of the inner circular ring are connected to the clamping grooves of the connecting pieces in a clamped mode. And a cavity is formed between the connecting sheet and the rubber pad. The rubber pad of the annular structure is an arc-shaped convex ring when the lifting and pressing sleeve is not connected with the rubber pad in a pressing mode, the shape of the rubber pad is changed into a horizontal circular ring from the arc-shaped convex ring in the pressing mode, noise in the pressing process is reduced through deformation, and the technical performance that the presser foot is mute is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of embroidery machine equipment, and particularly relates to an embroidery machine head with a silent presser foot. Background Art

[0002] During the use of an embroidery machine head, the noise problem has always been a technical problem that needs to be solved. When a traditional embroidery machine head is working, due to the impact and friction of mechanical movement, it will generate relatively large noise. Especially for the noise impact of the presser foot that plays a role in pressing the fabric, it is more obvious, which affects the working environment of the operator and the quietness of the surrounding environment. In order to reduce noise and improve the working efficiency and comfort of the embroidery machine, the utility model proposes an embroidery machine head with a silent presser foot. Content of the Utility Model

[0003] The utility model provides an embroidery machine head with a silent presser foot, which has a simple structure and low noise during the process of the presser foot pressing the fabric and driving.

[0004] An embroidery machine head with a silent presser foot includes a head housing of the embroidery machine. The head housing is cooperatively connected with a needle bar holder. The needle bar holder is provided with a presser foot needle bar connected to the presser foot. The presser foot needle bar is connected to a lift pressure sleeve. The lift pressure sleeve is cooperatively installed on a presser foot driver of a driving shaft. A rubber pad is connected to the side of the presser foot driver through a connecting piece. The rubber pad is of an annular structure. The annular structure includes a horizontal bottom surface. Two sides of the horizontal bottom surface are upwardly surrounded to form an arc-shaped convex ring. An inner ring protruding inward is arranged inside the annular structure. Two sides of the inner ring are snap-connected to a card slot arranged on the connecting piece. A cavity is arranged between the connecting piece and the rubber pad. When the lift pressure sleeve does not press the rubber pad, the rubber pad of the annular structure is an arc-shaped convex ring. When being pressed, the shape of the rubber pad changes from the arc-shaped convex ring to a horizontal ring. Through the deformation, the noise during the pressing process is reduced, and the technical performance of the silent presser foot is realized. It has a good buffering and noise reduction function.

[0005] The presser foot driver includes a tubular body. One side of the tubular body is provided with an integrally formed connecting plate. The other side of the tubular body is provided with an integrally formed rubber pad support and a protruding horizontal mounting seat. The horizontal mounting seat is attached to the connecting piece. The connecting piece is of a 90-degree bending structure and is divided into a vertical surface and a horizontal surface. The vertical surface is attached to and connected to the horizontal mounting seat. The card slot on the horizontal surface is snap-connected to the rubber pad. The horizontal bottom surface of the rubber pad is embedded in the space between the horizontal surface and the rubber pad support, so that the rubber pad can generate a certain deformation when being stressed, thereby absorbing part of the impact energy and reducing noise.

[0006] A lengthened pin shaft is connected to the side of the connecting plate. A limiting ring is arranged on the outer periphery of the lengthened pin shaft on one side of the connecting plate, and a nut is connected to the other side of the connecting plate. The limiting ring is connected to a rotating cam on the embroidery machine head to drive the presser foot driver to move up and down, realizing the up and down movement of the presser foot connected to the presser foot needle bar, and achieving the pressing function for the fabric.

[0007] A bushing matching the driving shaft is arranged inside the tubular body. A notch is arranged at the top of the bushing, and the presser foot driver is fixedly connected through a screw at the notch. This kind of bushing structure not only improves the service life of the presser foot driver, but also further reduces noise while preventing axial movement of the bushing by fixing the bushing in the presser foot driver with screws.

[0008] In the utility model, when the lifting and pressing sleeve does not press the rubber pad, the rubber pad with a circular ring structure is an arc-shaped convex ring. When being pressed, the shape of the rubber pad changes from an arc-shaped convex ring to a horizontal circular ring, and the technical performance of presser foot mute is realized by reducing noise during the pressing process through deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following further describes the present utility model with reference to the drawings:

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the embroidery machine head with presser foot mute of the present utility model;

[0011] Figure 2 It is a three-dimensional structural schematic diagram of the embroidery machine head with presser foot mute in the working state of the present utility model (the lifting and pressing sleeve presses the rubber pad);

[0012] Figure 3 It is a three-dimensional installation structural schematic diagram of the presser foot driver in the present utility model;

[0013] Figure 4 It is a three-dimensional structural schematic diagram of the presser foot driver in the present utility model;

[0014] Figure 5 It is a three-dimensional structural schematic diagram of the rubber pad in the present utility model. SPECIFIC IMPLEMENTATION SCHEMES

[0015] The following further describes in detail the technical solutions of this patent with reference to the specific implementation manners. Figures 1-5 Specific embodiments are used to further elaborate on the technical solutions of this patent in detail.

[0016] An embroidery machine head with a quiet presser foot, including the head housing 2 of the embroidery machine. The head housing 2 is cooperatively connected to the needle bar holder 1. The needle bar holder 1 is installed with a presser foot needle bar 8 connected to the presser foot 5. The presser foot needle bar 8 is connected to the lift pressure sleeve 7. The lift pressure sleeve 7 is cooperatively installed on the presser foot driver 4 of the main shaft 3. A rubber pad 6 is connected to the side of the presser foot driver 4 through a connecting piece 17. The rubber pad 6 is of an annular structure. The annular structure includes a horizontal bottom surface 22. Two sides of the horizontal bottom surface 22 upwardly surround to form an arc-shaped convex ring 24. An inwardly protruding inner ring 23 is provided inside the annular structure. Two sides of the inner ring 23 are snap-connected to the card slots 21 provided on the connecting piece 17. A cavity 30 is provided between the connecting piece 17 and the rubber pad 6, so that when the rubber pad 6 is under pressure, the impact energy can be effectively absorbed, and the noise can be further reduced.

[0017] As a structural preference, the presser foot driver 4 includes a tubular body. One side of the tubular body is provided with an integral connecting plate 18. The other side of the tubular body is provided with an integral rubber pad bracket 20 and a protruding horizontal mounting seat 11. The horizontal mounting seat 11 is attached to the connecting piece 17. The connecting piece 17 is of a 90-degree bent structure and is divided into a vertical surface and a horizontal surface. The vertical surface is attached to connect the horizontal mounting seat 11. The card slot 21 on the horizontal surface is snap-connected to the rubber pad 6. The horizontal bottom surface 22 of the rubber pad 6 is embedded in the space between the horizontal surface and the rubber pad bracket 20, improving the stability of the installation position of the rubber pad 6 and preventing it from falling off.

[0018] As a structural preference, a lengthened pin shaft 12 is connected to the side of the connecting plate 18. A limit ring 13 is provided on the outer circumference of the lengthened pin shaft 12 on one side of the connecting plate 18. A nut 19 is connected to the other side of the connecting plate 18. The limit ring of the lengthened pin shaft 12 is connected to the rotating cam on the embroidery machine head to drive the presser foot driver to move up and down, realizing the up and down movement of the presser foot connected to the presser foot needle bar, and achieving the pressing function for the fabric.

[0019] In order to further improve the service life and quiet performance of the presser foot driver, a bushing 15 cooperating with the main shaft 3 is provided inside the tubular body. A notch 16 is provided at the top of the bushing 15. The presser foot driver 4 is fixedly connected through a screw 14 at the notch 16.

[0020] The above has made a detailed description of the preferred embodiments of this patent. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the gist of this patent.

Claims

1. An embroidery machine head with a quiet presser foot, comprising a head housing (2) of the embroidery machine, the head housing (2) is cooperatively connected with a needle bar holder (1), the needle bar holder (1) is installed with a presser foot needle bar (8) connecting a presser foot (5), the presser foot needle bar (8) is connected with a lift presser sleeve (7), and it is characterized in that: The described pressure foot lifting sleeve (7) is fitted and installed on the pressure foot driver (4) of the driving shaft (3). A rubber pad (6) is connected to the side of the pressure foot driver (4) through a connecting piece (17). The rubber pad (6) is of an annular structure, and the annular structure includes a horizontal bottom surface (22). Arc-shaped convex rings (24) are formed by upward surrounding on both sides of the horizontal bottom surface (22). An inner ring (23) protruding inwards is arranged inside the annular structure. The two sides of the inner ring (23) are snap-fitted and connected to the card slots (21) provided on the connecting piece (17). A cavity (30) is provided between the connecting piece (17) and the rubber pad (6).

2. The embroidery machine head with a quiet presser foot according to claim 1, characterized in that: The described pressure foot driver (4) includes a tubular body. A connecting plate (18) is integrally provided on one side of the tubular body. A rubber pad support (20) and a protruding horizontal mounting seat (11) are integrally provided on the other side of the tubular body.

3. The embroidery machine head with a quiet presser foot according to claim 2, characterized in that: The described horizontal mounting seat (11) is attached to the connecting piece (17). The connecting piece (17) is of a 90-degree bent structure and is divided into a vertical surface and a horizontal surface. The vertical surface is attached to and connected to the horizontal mounting seat (11). The card slot (21) on the horizontal surface is snap-fitted and connected to the rubber pad (6). The horizontal bottom surface (22) of the rubber pad (6) is embedded in the space between the horizontal surface and the rubber pad support (20).

4. The embroidery machine head with a quiet presser foot according to claim 2, characterized in that: A lengthened pin shaft (12) is connected to the side of the connecting plate (18). A limit ring (13) is provided on the outer periphery of the lengthened pin shaft (12) on one side of the connecting plate (18). A nut (19) is connected to the other side of the connecting plate (18).

5. The head of an embroidery machine with a quiet presser foot according to claim 2, characterized in that: A shaft sleeve (15) for cooperating with the driving shaft (3) is provided inside the described tubular body. A notch (16) is provided at the top of the shaft sleeve (15). The pressure foot driver (4) is fixedly connected through a screw (14) at the notch (16).

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