A presser foot and needle bar mechanism for an embroidery machine

Abstract

The application discloses an embroidery machine presser foot and needle bar mechanism and relates to the technical field of embroidery machine parts, solves the problem that when the presser foot is replaced, the face thread clamping plate installed on the front side of the presser foot needs to be disassembled from the machine head, the presser foot can be replaced, the presser foot replacement steps are relatively complex, and the fixed screw and the gasket of the face thread clamping are small in size and are easy to lose after being disassembled, and comprises a rack, the front end face of the face thread clamping plate is fixedly installed with the face thread clamping plate through a screw, the inner side of the rack is installed with a plurality of groups of needle bar mechanisms which are used for embroidery and are distributed at equal distances, the needle bar mechanism comprises a press rod movably embedded in the inner side of the rack, and the outer side of the press rod is sleeved with a presser foot mechanism which is used for pressing a fabric, the connecting structure is installed between the connecting plate and the presser foot body, the presser foot body can be quickly pulled out from the connecting seat, the presser foot is simple and convenient to replace, the parts of the embroidery machine do not need to be disassembled, and the small parts of the embroidery machine can be effectively prevented from being lost.

Description

Technical Field

[0001] This invention relates to the field of embroidery machine parts technology, specifically to an embroidery machine presser foot and needle bar mechanism. Background Technology

[0002] Embroidery machines, also known as computerized embroidery machines, are the most advanced embroidery machinery of our time. They enable traditional hand embroidery to be completed at high speed and efficiency. They are electromechanical products that embody a variety of high-tech features. As computerized embroidery replaces hand embroidery, computerized embroidery machines will become the main type of machine in the embroidery industry. In the use of embroidery machines, the presser foot is one of the core components. Its function is to feed the fabric. When the needle goes down, the fabric does not move around, allowing the needle to go down smoothly. When the needle goes up, the presser foot holds the fabric down, allowing the needle to go up smoothly and bringing the thread out.

[0003] Existing Chinese patent 201210448493.6 discloses an auxiliary presser foot for an embroidery machine, which can maintain a pressing state on the fabric in the direction of sewing and has a large pressing area, thereby effectively ensuring that the fabric remains flat within the sewing area.

[0004] When the above-mentioned device is applied to an embroidery machine, a thread clamping plate is installed at the presser foot. When the fabric to be embroidered has different thicknesses, in order to make the presser foot better cooperate with the embroidery, it is usually necessary to change to a different model of presser foot when embroidering fabrics of different thicknesses. However, when changing the presser foot, the thread clamping plate installed on the front side of the presser foot on the machine head needs to be removed before the presser foot can be replaced. This makes the presser foot replacement process more complicated. In addition, the fixing screws and washers of the thread clamping are small and are easy to lose after disassembly. Summary of the Invention

[0005] The purpose of this invention is to provide an embroidery machine presser foot and needle bar mechanism that facilitates the replacement of different presser foot models, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a presser foot and needle bar mechanism for an embroidery machine, comprising a frame, wherein a thread clamping plate is fixedly mounted on the front end face of the thread clamping plate by screws, and a plurality of needle bar mechanisms for embroidery are installed on the inner side of the frame in an equidistant arrangement, wherein the needle bar mechanism includes a presser bar movably embedded in the inner side of the frame, and a presser foot mechanism for pressing the fabric is sleeved on the outer side of the presser bar, wherein the presser foot mechanism includes a first slider movably sleeved on the outer side of the presser bar, a connecting plate is fixedly mounted on the front end of the first slider by screws, and a presser foot body is movably sleeved on the lower end of the presser bar; a connecting structure for connecting the connecting plate and the presser foot body is movably mounted on the outer side of the presser bar, and a support component is installed on the rear side of the presser foot body on the frame.

[0007] Preferably, the connection structure includes a connecting seat fixedly installed at the lower end of the connecting plate, and the rear end face of the connecting seat is movably fitted with the outer wall of the pressure rod. A positioning pin is fixedly installed inside the connecting seat, and the positioning pin is located on the center line of the connecting seat. A V-shaped spring is fixedly installed on the outer side of the positioning pin. A snap-fit ​​groove is opened on the lower end face of the connecting seat, and the V-shaped spring is movably connected to the connecting seat through the snap-fit ​​groove. An adjustment component is installed on the inner side of the V-shaped spring inside the connecting seat. The V-shaped spring is made of metal.

[0008] Preferably, the adjusting component includes a sleeve embedded inside the connecting seat, and the sleeve can move longitudinally inside the connecting seat. A groove is formed at the center of one end of the sleeve facing the outside of the connecting seat. A positioning post is movably installed inside the sleeve, and the positioning post has a circular cross-sectional shape. Two symmetrically distributed limiting blocks are fixedly installed on the outside of the positioning post inside the sleeve. The positioning post can position the sleeve.

[0009] Preferably, the inner wall of the sleeve has two symmetrically distributed limiting straight grooves, and the two limiting blocks are slidably connected to the sleeve through the two limiting straight grooves. The positioning post is movably abutted against a third spring at one end inside the sleeve, and the positioning post is fixedly welded to the connecting seat at one end outside the sleeve. Two symmetrically distributed first hinge seats are fixedly installed on the outer side of the sleeve. A cylindrical connecting rod is hinged to the inner side of the first hinge seat, and a second hinge seat is hinged to the end of the cylindrical connecting rod. The connection between the second hinge seat and the V-shaped spring is fixedly welded. The connecting seat has a clearance groove inside for the movement of the first hinge seat and the cylindrical connecting rod. The limiting blocks can prevent the sleeve from disengaging from the positioning post.

[0010] Preferably, a second spring is fixedly installed at the upper end of the first slider, and the second spring is movably sleeved on the outside of the pressure rod. A second limiting sleeve is fixedly connected to the upper end of the second spring, and the connection between the second limiting sleeve and the pressure rod is a movable sleeve connection. An avoidance groove is provided at the upper end of the pressure foot body, and a bent part is provided at the connection between the avoidance groove and the top of the V-shaped spring. The connection between the pressure foot body and the connecting seat is a plug-in connection. The pressure foot body is movably engaged with the V-shaped spring through the bent part of the avoidance groove, and the edge of the avoidance groove is movably fitted with the edge of the V-shaped spring.

[0011] Preferably, a top cap is fixedly connected to the top of the pressure rod, a first positioning sleeve is movably sleeved on the outer side of the pressure rod, and the first positioning sleeve is located above the second limiting sleeve. A first spring is fixedly installed between the top cap and the first positioning sleeve, and the first spring is movably sleeved on the outer side of the pressure rod. A needle is fixedly installed at the lower end of the pressure rod, and a thread hole is opened on the needle.

[0012] Preferably, the support assembly includes a support plate that is movably fitted with the pressure rod body. The upper end of the support plate is horizontally bent at an angle of °. Two symmetrically distributed support legs are fixedly connected to both ends of the support plate. The upper end surfaces of the two support legs at the bent end of the support plate are movably fitted with the lower end surface of the connecting seat, and the two support legs at the bent end are located outside the pressure rod. The support plate is made of metal.

[0013] Preferably, a fixed base is fixedly installed at the rear end of the support plate, a long connecting rod passes through the interior of the fixed base, and the long connecting rod is fixedly connected to the fixed base. A second slider is fixedly connected to both ends of the long connecting rod. A limit groove is opened on the lower end surface of the frame, and the second slider is slidably connected to the frame through the limit groove. Both ends of the long connecting rod are slidably connected to the frame through the limit groove.

[0014] Preferably, a bolt passes through the center of the second slider, and the connection between the second slider and the bolt is a movable sleeve. The connection between the bolt and the frame is a threaded connection. A nut is fixedly connected to the lower end of the bolt, and the upper end face of the nut abuts against the lower end face of the frame. A fourth spring is installed between the second slider and the nut, and the fourth spring is movably sleeved on the outside of the bolt. The two ends of the fourth spring abut against the lower end face of the second slider and the upper end face of the nut, respectively.

[0015] Preferably, the two legs at the lower end of the support plate are movably fitted to the left and right sides of the pressure plate body, and the legs and the support plate are integrally formed.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention features a connecting structure installed between the connecting plate and the presser foot body. An adjustment component is installed inside the connecting seat of this structure. When changing presser feet to different sizes for fabrics of varying thicknesses, a thin stick is used to press the sleeve in the adjustment component into the connecting seat. As the sleeve moves, a cylindrical connecting rod narrows the opening of the V-shaped spring, causing the two ends of the V-shaped spring to disengage from the bend in the avoidance groove. This allows the presser foot body to be quickly pulled out of the connecting seat, making presser foot replacement simple and convenient. It eliminates the need to disassemble parts of the embroidery machine, effectively preventing the loss of small parts. Furthermore, a component is installed on the rear side of the presser foot body to support it when it moves down to press the fabric, preventing the fabric from pulling on the presser foot body and causing deformation during movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall invention;

[0019] Figure 2 This is the overall design of the needle bar mechanism and presser foot mechanism of the present invention;

[0020] Figure 3 This is a side sectional view of the connection structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 A magnified diagram showing the splitting of A in the diagram;

[0022] Figure 5 This is a schematic diagram showing the connection state between the adjustment component and the V-shaped spring sheet of the present invention;

[0023] Figure 6 This is a partial schematic diagram of the rear side of the needle bar structure of the present invention;

[0024] Figure 7 This is a side sectional rear view of the frame mounting support assembly of the present invention;

[0025] Figure 8 This is a schematic diagram showing the connection state between the support component and the pressure foot structure of the present invention;

[0026] Figure 9 This is a schematic diagram showing the breakdown of the supporting components of the present invention.

[0027] In the diagram: 1. Frame; 2. Thread clamping plate; 3. Needle bar mechanism; 301. Pressure bar; 302. Top cap; 303. First positioning sleeve; 304. First spring; 305. Needle; 4. Pressure foot mechanism; 401. First slider; 402. Connecting plate; 403. Pressure foot body; 404. Second spring; 405. Second limiting sleeve; 406. Clearance slot; 5. Connecting structure; 501. Connecting seat; 502. Positioning pin 503, V-shaped spring; 6, Adjustment assembly; 601, Sleeve; 602, Groove; 603, Positioning pin; 604, Limiting block; 605, Third spring; 606, First hinge seat; 607, Cylindrical connecting rod; 608, Second hinge seat; 7, Support assembly; 701, Support plate; 702, Fixed seat; 703, Long connecting rod; 704, Second slider; 705, Bolt; 706, Nut; 707, Fourth spring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 The diagram illustrates a presser foot and needle bar mechanism for an embroidery machine, comprising a frame 1, a thread clamping plate 2 fixedly mounted on the front end of the thread clamping plate 2 by screws, several sets of needle bar mechanisms 3 evenly distributed for embroidery mounted on the inner side of the frame 1, each needle bar mechanism 3 including a presser rod 301 movably embedded in the inner side of the frame 1, a presser foot mechanism 4 for pressing the fabric sleeved on the outer side of the presser rod 301, the presser foot mechanism 4 including a first slider 401 movably sleeved on the outer side of the presser rod 301, a connecting plate 402 fixedly mounted on the front end of the first slider 401 by screws, a presser foot body 403 movably sleeved on the lower end of the presser rod 301; a connecting structure 5 for connecting the connecting plate 402 and the presser foot body 403 movably mounted on the outer side of the presser rod 301, and a support component 7 mounted on the rear side of the presser foot body 403 on the frame 1.

[0031] Please see Figure 3The connecting structure 5 includes a connecting seat 501 fixedly installed at the lower end of the connecting plate 402, and the rear end face of the connecting seat 501 is movably fitted with the outer wall of the pressure rod 301. A positioning pin 502 is fixedly installed inside the connecting seat 501, and the positioning pin 502 is located on the center line of the connecting seat 501. A V-shaped spring piece 503 is fixedly installed on the outer side of the positioning pin 502. A snap-fit ​​groove is opened on the lower end face of the connecting seat 501, and the V-shaped spring piece 503 is movably connected to the connecting seat 501 through the snap-fit ​​groove. An adjustment component 6 is installed on the inner side of the V-shaped spring piece 503 inside the connecting seat 501.

[0032] Please see Figure 4 and Figure 5 The adjusting component 6 includes a sleeve 601 embedded inside the connecting seat 501, and the sleeve 601 can move longitudinally inside the connecting seat 501. A groove 602 is provided at the center of the end of the sleeve 601 facing the outside of the connecting seat 501. A positioning post 603 is movably installed inside the sleeve 601, and the cross-sectional shape of the positioning post 603 is circular. Two symmetrically distributed limiting blocks 604 are fixedly installed on the outside of the positioning post 603 inside the sleeve 601.

[0033] Please see Figure 5 The inner wall of the sleeve 601 has two symmetrically distributed limiting straight grooves, and the two limiting blocks 604 are slidably connected to the sleeve 601 through the two limiting straight grooves. The positioning post 603 is located inside the sleeve 601, and one end of the positioning post 603 is movably abutting against the third spring 605. The other end of the positioning post 603 is located outside the sleeve 601 and is fixedly welded to the connecting seat 501. Two symmetrically distributed first hinge seats 606 are fixedly installed on the outer side of the sleeve 601. A cylindrical connecting rod 607 is hinged to the inner side of the first hinge seat 606. A second hinge seat 608 is hinged to the end of the cylindrical connecting rod 607. The connection between the second hinge seat 608 and the V-shaped spring 503 is fixedly welded. The interior of the connecting seat 501 has a clearance groove for the movement of the first hinge seat 606 and the cylindrical connecting rod 607.

[0034] Please see Figure 2 A second spring 404 is fixedly installed on the upper end of the first slider 401, and the second spring 404 is movably sleeved on the outside of the pressure rod 301. A second limiting sleeve 405 is fixedly connected to the upper end of the second spring 404, and the connection between the second limiting sleeve 405 and the pressure rod 301 is a movable sleeve connection. An avoidance groove 406 is provided on the upper end of the pressure foot body 403. A bending part is provided at the connection between the avoidance groove 406 and the top of the V-shaped spring piece 503. The connection between the pressure foot body 403 and the connecting seat 501 is a plug-in connection. The pressure foot body 403 is movably engaged with the V-shaped spring piece 503 through the bending part of the avoidance groove 406.

[0035] Please see Figure 2A top cap 302 is fixedly connected to the top of the pressure rod 301. A first positioning sleeve 303 is movably sleeved on the outside of the pressure rod 301, and the first positioning sleeve 303 is located on the upper side of the second limiting sleeve 405. A first spring 304 is fixedly installed between the top cap 302 and the first positioning sleeve 303, and the first spring 304 is movably sleeved on the outside of the pressure rod 301. A needle 305 is fixedly installed at the lower end of the pressure rod 301.

[0036] The working principle of the embroidery machine presser foot for easy replacement of different models is as follows: When changing the presser foot body 403 according to the fabric thickness, with the sleeve 601 able to move longitudinally inside the connecting seat 501, the user inserts the end of the thin stick into the groove 602 at the end of the sleeve 601. With the sleeve 601 movably sleeved with the positioning post 603 and the limiting block 604 slidably connected to the sleeve 601 through the limiting straight groove, the thin stick presses the sleeve 601 into the connecting post 501. With the cylindrical connecting rod 607 movably hinged to the first hinge seat 606 and the second hinge seat 608 respectively, as the sleeve 601 moves into the connecting seat 501, the cylindrical connecting rod 607, the first hinge seat 606 and the second hinge seat 608 drive the two ends of the V-shaped spring piece 503 to move closer together. During the process of closing together, the V-shaped spring 503 disengages from the bent part of the upper clearance slot 406 of the pressure plate body 403. Under the conditions of plugging and unplugging connection between the pressure plate body 403 and the connecting seat 501, and movable sleeve connection between the pressure plate body 403 and the pressure rod 301, the pressure plate body can be easily pulled out from the underside of the connecting seat 501. Then, the upper ends of other pressure plate bodies 403 of different lengths are inserted into the connecting seat 501. Due to the elasticity of the V-shaped spring 503, when the upper end of the pressure plate body 403 is fully inserted into the connecting seat 501, both ends of the V-shaped spring 503 automatically engage in the bent part of the upper clearance slot 406 of the pressure plate body 403. During the disassembly and assembly of the pressure plate body 403, there is no need to disassemble other parts of the embroidery machine head, reducing the disassembly and assembly steps of the pressure plate body 403 and effectively preventing the loss of other parts of the embroidery machine head.

[0037] Example 2

[0038] Please see Figure 7 and Figure 8 This embodiment further illustrates Example 1. The support assembly 7 includes a support plate 701 that is movably fitted with the pressure rod body 403. The upper end of the support plate 701 is bent horizontally at 90°. Two symmetrically distributed support legs are fixedly connected to both ends of the support plate 701. The upper end surfaces of the two support legs at the bent end of the support plate 701 are movably fitted with the lower end surface of the connecting seat 501, and the two support legs at the bent end are located outside the pressure rod 301.

[0039] Please see Figure 9A fixed base 702 is fixedly installed at the rear end of the support plate 701. A long connecting rod 703 passes through the interior of the fixed base 702, and the connection between the long connecting rod 703 and the fixed base 702 is a fixed connection. A second slider 704 is fixedly connected to both ends of the long connecting rod 703. A limit groove is opened on the lower end face of the frame 1, and the second slider 704 is slidably connected to the frame 1 through the limit groove.

[0040] Please see Figure 8 In conjunction with 9, a bolt 705 passes through the center of the second slider 704, and the connection between the second slider 704 and the bolt 705 is a movable sleeve. The connection between the bolt 705 and the frame 1 is a threaded connection. A nut 706 is fixedly connected to the lower end of the bolt 705, and the upper end face of the nut 706 abuts against the lower end face of the frame 1. A fourth spring 707 is installed between the second slider 704 and the nut 706, and the fourth spring 707 is movably sleeved on the outside of the bolt 705.

[0041] In this embodiment: when the drive mechanism inside the embroidery machine head drives the first slider 401 in the presser foot mechanism to move downward, under the condition that the upper end surfaces of the two support feet at the bent end of the support plate 701 abut against the lower end surface of the connecting seat 501, the first slider 401 moves downward, driving the support plate 701 to move downward. This ensures that the two support feet at the lower end of the support plate 701 are always located on both sides of the bent end of the presser foot body 403. The support plate 701 limits the left and right sides of the presser foot body 403, preventing the fabric from slipping during left and right movement. The material will pull on the pressure plate body 403, causing the pressure plate body 403 to deform. When the pressure plate body 403 moves upward and resets, the support plate 701 will also reset under the drive of the fourth spring 707. When the support plate 701 needs to be replaced, under the condition that the bolt 705 is threadedly connected to the frame 1, the two bolts 705 are removed from the frame 1 by rotating the bolt 705 with the nut 706. At this time, the second slider 704 can slide out of the frame 1 through the limit groove, which makes it easy to remove several sets of support plates 701 from the frame 1 for replacement.

[0042] Example 3

[0043] Please see Figure 8 This embodiment further illustrates that, for other embodiments, the two legs at the lower end of the support plate 701 are movably fitted with the left and right sides of the pressure plate body 403.

[0044] In this embodiment, the two legs at the lower end of the support plate 701 are in contact with the left and right sides of the pressure plate body 403, so that the support plate 701 provides better support for the pressure plate body 403.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A presser foot and needle bar mechanism for an embroidery machine, comprising a frame (1), wherein a thread clamping plate (2) is fixedly mounted on the front end face of the frame (1) by screws, characterized in that: The inner side of the frame (1) is equipped with several sets of needle bar mechanisms (3) for embroidery, which are evenly distributed. The needle bar mechanism (3) includes a pressure bar (301) that is movably embedded in the inner side of the frame (1). The outer side of the pressure bar (301) is fitted with a presser foot mechanism (4) for pressing the fabric. The presser foot mechanism (4) includes a first slider (401) that is movably fitted on the outer side of the pressure bar (301). The front end of the first slider (401) is fixedly installed with a connecting plate (402) by screws. The lower end of the pressure bar (301) is movably fitted with a presser foot body (403). The connecting structure (5) is used to connect the connecting plate (402) and the pressure rod body (403). The connecting structure (5) is movably installed on the outside of the pressure rod (301). The rear side of the pressure rod body (403) is located on the frame (1) and a support assembly (7) is installed. The connecting structure (5) includes a connecting seat (501) fixedly installed at the lower end of the connecting plate (402), and the rear end face of the connecting seat (501) is movably fitted with the outer wall of the pressure rod (301). A positioning pin (502) is fixedly installed inside the connecting seat (501), and the positioning pin (502) is located on the center line of the connecting seat (501). A V-shaped spring (503) is fixedly installed on the outer side of the positioning pin (502). A snap-fit ​​groove is opened on the lower end face of the connecting seat (501), and the V-shaped spring (503) is movably connected to the connecting seat (501) through the snap-fit ​​groove. An adjustment component (6) is installed on the inner side of the V-shaped spring (503) inside the connecting seat (501). The adjusting component (6) includes a sleeve (601) embedded inside the connecting seat (501), and the sleeve (601) can move longitudinally inside the connecting seat (501). A groove (602) is provided at the center of one end of the sleeve (601) facing the outside of the connecting seat (501). A positioning post (603) is movably installed inside the sleeve (601), and the cross-sectional shape of the positioning post (603) is circular. Two symmetrically distributed limiting blocks (604) are fixedly installed on the outside of the positioning post (603) inside the sleeve (601). The inner wall of the sleeve (601) has two symmetrically distributed limiting grooves, and the two limiting blocks (604) are slidably connected to the sleeve (601) through the two limiting grooves. The positioning post (603) located inside the sleeve (601) is movably abutting against a third spring (605), and the positioning post (603) located outside the sleeve (601) is fixedly welded to the connecting seat (501). The outer side of the sleeve (601) is fixedly mounted. The device is equipped with two symmetrically distributed first hinge seats (606). A cylindrical connecting rod (607) is hinged to the inner side of the first hinge seat (606). A second hinge seat (608) is hinged to the end of the cylindrical connecting rod (607). The connection between the second hinge seat (608) and the V-shaped spring (503) is fixedly welded. The connecting seat (501) has a clearance groove inside for the movement of the first hinge seat (606) and the cylindrical connecting rod (607). The upper end of the first slider (401) is fixedly installed with a second spring (404), and the second spring (404) is movably sleeved on the outside of the pressure rod (301). The upper end of the second spring (404) is fixedly connected with a second limiting sleeve (405), and the connection between the second limiting sleeve (405) and the pressure rod (301) is a movable sleeve connection. The upper end of the pressure foot body (403) is provided with a clearance slot (406). The connection between the clearance slot (406) and the top end of the V-shaped spring (503) is provided with a bent part. The connection between the pressure foot body (403) and the connecting seat (501) is a plug-in connection. The pressure foot body (403) is movably engaged with the V-shaped spring (503) through the bent part of the clearance slot (406). Using a thin stick, press the sleeve in the adjustment component into the connecting seat. As the sleeve moves, it narrows the opening of the V-shaped spring through the cylindrical connecting rod, causing the two ends of the V-shaped spring to disengage from the bend of the avoidance slot. This allows the presser foot body to be quickly pulled out of the connecting seat, making it simple and convenient to replace the presser foot without disassembling the parts of the embroidery machine.

2. The embroidery machine presser foot and needle bar mechanism according to claim 1, characterized in that: A top cap (302) is fixedly connected to the top of the pressure rod (301). A first positioning sleeve (303) is movably sleeved on the outside of the pressure rod (301), and the first positioning sleeve (303) is located on the upper side of the second limiting sleeve (405). A first spring (304) is fixedly installed between the top cap (302) and the first positioning sleeve (303), and the first spring (304) is movably sleeved on the outside of the pressure rod (301). A needle (305) is fixedly installed at the lower end of the pressure rod (301).

3. The embroidery machine presser foot and needle bar mechanism according to claim 1, characterized in that: The support assembly (7) includes a support plate (701) that is movably fitted with the pressure rod body (403). The upper end of the support plate (701) is bent horizontally at 90°. Both ends of the support plate (701) are fixedly connected to two symmetrically distributed support legs. The upper end surfaces of the two support legs at the bent end of the support plate (701) are movably fitted with the lower end surface of the connecting seat (501), and the two support legs at the bent end are located outside the pressure rod (301).

4. The embroidery machine presser foot and needle bar mechanism according to claim 3, characterized in that: A fixed seat (702) is fixedly installed at the rear end of the support plate (701). A long connecting rod (703) runs through the interior of the fixed seat (702). The long connecting rod (703) and the fixed seat (702) are connected in a fixed manner. A second slider (704) is fixedly connected to both ends of the long connecting rod (703). A limit groove is opened on the lower end face of the frame (1). The second slider (704) is slidably connected to the frame (1) through the limit groove.

5. The embroidery machine presser foot and needle bar mechanism according to claim 4, characterized in that: A bolt (705) passes through the center of the second slider (704), and the connection between the second slider (704) and the bolt (705) is a movable sleeve. The connection between the bolt (705) and the frame (1) is a threaded connection. A nut (706) is fixedly connected to the lower end of the bolt (705), and the upper end face of the nut (706) abuts against the lower end face of the frame (1). A fourth spring (707) is installed between the second slider (704) and the nut (706), and the fourth spring (707) is movably sleeved on the outside of the bolt (705).

6. The embroidery machine presser foot and needle bar mechanism according to claim 3, characterized in that: The two legs at the lower end of the support plate (701) are in contact with the left and right sides of the pressure plate body (403).

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