Thread holder for a sewing machine

Abstract

The utility model relates to sewing machine technical field discloses a thread rack of sewing machine, including L type frame, the surface fixed mounting of L type frame has the support, the bottom end circumferential surface of support fixedly installed has two groups of fixed plate, and two groups the fixed plate all are equipped with multiple positioning assembly, the positioning assembly includes the fixed axle fixedly installed in the fixed plate surface, the fixed axle is connected with the elastic column and the arc clamping piece through the locating cylinder, the bottom end circumferential surface of fixed axle fixedly installed has the coil tray, fixed axle supports the bobbin, and the coil tray holds the bottom of bobbin, and the limit cover is connected with the fixed axle through the threaded hole and forms the up and down positioning structure, and multiple arc clamping pieces are elastically opened and closed through the elastic column, and the self -adaptation different diameter bobbin provides stable radial clamping force, and the locking bolt of locking hole cooperation ferrule realizes the multistage height adjustment of the wire guide plate, and the wire hanger ring of wire guide plate bottom surface is in matrix distribution, effectively avoids multiple thread winding and promotes synchronous thread feeding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a sewing machine thread holder. Background Technology

[0002] A sewing machine is a machine that interweaves or sews together one or more layers of fabric. It is widely used in garment production. During the garment production process, a large number of different colors and types of sewing threads are needed. In order to place and distinguish these sewing threads in a centralized manner, garment factories usually make a special sewing thread rack to classify and place various sleeves with sewing threads on the sewing thread rack.

[0003] The applicant discovered through a search that a Chinese patent discloses "A thread holder for a sewing machine," with publication (announcement) number "CN 215713855 U." This patent mainly includes a placement component, a base, and a coil tray. The coil tray is installed on the top wall of the base. In the device, by pushing the spring to expand, the moving block moves with the support plate and continues to contact the bottom of the sleeve, reducing the weight acting on the sewing thread after the sleeve is pulled up, and reducing the pressure between the sewing thread and the guide ring. However, the above technology does not consider the radial fixation of the spool. When the sewing thread is pulled at high speed, the tension is unstable due to the spool shaking, which affects the sewing accuracy. Moreover, it cannot adapt to various specifications of spools and has limitations. Therefore, we propose a thread holder for a sewing machine. Utility Model Content

[0004] The purpose of this invention is to provide a thread holder for a sewing machine to solve the problems of the above-mentioned technology, which does not consider the radial fixation of the spool, and the sewing thread is prone to tension instability due to spool wobbling when pulled at high speed, which affects sewing accuracy and cannot be adapted to various specifications of spools, thus having limitations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sewing machine thread frame, including an L-shaped frame, a bracket fixedly mounted on the surface of the L-shaped frame, two sets of fixing plates fixedly mounted on the bottom circumferential surface of the bracket, and multiple sets of positioning components provided on both sets of fixing plates, each positioning component including a fixing shaft fixedly mounted on the surface of the fixing plate, the fixing shaft being connected to an elastic column and an arc-shaped clamping piece through a positioning cylinder, a coil tray fixedly mounted on the bottom circumferential surface of the fixing shaft, and a threaded hole being opened at the top of the fixing shaft, with a limit cap threadedly connected inside the threaded hole.

[0006] As a preferred embodiment, the two sets of fixing plates are arranged at right angles. Multiple sets of locking holes are opened on the circumferential surfaces of both sides of the bracket. Two sets of collars are sleeved on the bracket, and the collars are fixedly connected to the bracket by locking bolts and locking holes. Wire plates are fixedly installed on the circumferential surfaces of the two sets of collars, and the two sets of wire plates are respectively arranged directly above the two sets of fixing plates. Multiple sets of wire lifting rings are fixedly installed on the bottom surface of the two sets of wire plates.

[0007] As a preferred embodiment, the positioning cylinder is rotatably connected to the circumferential surface of the fixed shaft, and the bottom of the positioning cylinder is in contact with the surface of the coil tray. Multiple sets of elastic columns are provided and distributed in a circumferential array, and one end of each set of elastic columns is fixedly installed on the circumferential surface of the positioning cylinder.

[0008] As a preferred embodiment, multiple sets of the arc-shaped clamping pieces are provided, and the inner surface of the arc-shaped clamping pieces is fixedly connected to the end of the elastic column away from the positioning cylinder.

[0009] As a preferred embodiment, the L-shaped frame is provided with multiple sets of locking components distributed at equal intervals inside, and the multiple sets of locking components are arranged alternately up and down. The locking component includes a threaded rod that is threadedly connected to the inside of the L-shaped frame.

[0010] As a preferred embodiment, an adsorption plate is fixedly installed at one end of the threaded rod inside the L-shaped frame, while a rotating block is fixedly installed at the other end of the threaded rod outside the L-shaped frame.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. By setting up positioning components, the fixed shaft supports the spool, the coil tray supports the bottom of the spool, and the limit cover is connected to the fixed shaft through threaded holes to form an upper and lower positioning structure. Multiple sets of arc-shaped clamping plates are elastically opened and closed through elastic columns to adapt to spools of different diameters and provide stable radial clamping force. The equally spaced locking holes on both sides of the bracket, together with the locking bolts of the collar, realize multi-level height adjustment of the conductor plate. The conductor lifting rings on the bottom surface of the conductor plate are distributed in a matrix, forming a spatial cross-guide system with the fixed plate with a double right angle layout, which effectively avoids multi-wire entanglement and improves synchronous wire feeding efficiency.

[0013] 2. By setting up locking components, the L-shaped frame uses a staggered arrangement of locking components inside. The screw rod is driven by a rotating block to feed the screw, which generates a gradient pressure field on the adsorption plate, forming a multi-point vacuum adsorption structure. This design utilizes the synergistic effect of mechanical screw transmission and negative pressure adsorption to achieve a rigid connection between the L-shaped frame and the sewing machine table. Compared with the traditional single-point fixing method, the alternating locking layout can reduce the installation sway amplitude by % and improve the stability of thread feeding. Attached Figure Description

[0014] Figure 1This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the rear part of the present invention;

[0016] Figure 3 This is a schematic diagram of the locking assembly structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the positioning component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the unfolded structure of the positioning component of this utility model.

[0019] In the diagram: 1. L-shaped frame; 2. Bracket; 3. Collar; 4. Wire guide plate; 5. Positioning assembly; 6. Locking assembly; 7. Wire lifting ring; 8. Fixing plate; 9. Locking bolt; 501. Fixing shaft; 502. Coil tray; 503. Limiting cover; 504. Positioning cylinder; 505. Elastic column; 506. Arc-shaped clamping piece; 507. Threaded hole; 601. Threaded rod; 602. Adsorption plate; 603. Rotating block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see the appendix Figure 1 - Appendix Figure 2 and appendix Figure 4 - Appendix Figure 5 A sewing machine thread holder includes an L-shaped frame 1. A bracket 2 is fixedly mounted on the surface of the L-shaped frame 1. Two sets of fixing plates 8 are fixedly mounted on the bottom circumferential surface of the bracket 2, and each of the two sets of fixing plates 8 is provided with multiple sets of positioning components 5. The positioning components 5 include a fixing shaft 501 fixedly mounted on the surface of the fixing plate 8. The fixing shaft 501 is connected to an elastic column 505 and an arc-shaped clamping piece 506 through a positioning cylinder 504. A coil tray 502 is fixedly mounted on the bottom circumferential surface of the fixing shaft 501, and a threaded hole 507 is opened on the top of the fixing shaft 501. A limit cover 503 is connected to the threaded hole 507 internally. The L-shaped frame 1 can be installed at the corner of the sewing machine table, occupying a small area, avoiding the large size of the thread holder when placed alone on the sewing machine table or the ground, which is easily swept or knocked over by the fabric.

[0022] Two sets of fixing plates 8 are set at right angles. Multiple sets of locking holes with equal spacing are opened on the circumferential surfaces of both sides of the bracket 2. Two sets of collars 3 are sleeved on the bracket 2, and the collars 3 are fixedly connected to the bracket 2 by locking bolts 9 and locking holes. Wire guide plates 4 are fixedly installed on the circumferential surfaces of the two sets of collars 3, and the two sets of wire guide plates 4 are respectively set directly above the two sets of fixing plates 8. Multiple sets of wire guide hanging rings 7 are fixedly installed on the bottom surface of the two sets of wire guide plates 4. The two sets of fixing plates 8 are set at right angles, making full use of space and allowing more spools of thread to be placed to meet various sewing needs. The positioning cylinder 504 is rotatably connected to the fixing shaft 501 and its bottom is connected to the coil tray 502. While ensuring structural stability, it does not affect the rotation of the spools to feed the thread, making the thread output smoother.

[0023] The positioning cylinder 504 is rotatably connected to the circumferential surface of the fixed shaft 501, and the bottom of the positioning cylinder 504 is in contact with the surface of the coil tray 502. Multiple sets of elastic pillars 505 are arranged in a circumferential array, and one end of each set of elastic pillars 505 is fixedly mounted on the circumferential surface of the positioning cylinder 504. Multiple sets of arc-shaped clamping pieces 506 are arranged, and the inner surface of each arc-shaped clamping piece 506 is fixedly connected to the end of each elastic pillar 505 away from the positioning cylinder 504. Multiple sets of elastic pillars 505 are arranged in a circumferential array. The distribution of the elastic columns 505 makes the clamping force on the spool more uniform. One end of each set of elastic columns 505 is fixedly installed on the circumferential surface of the positioning cylinder 504, providing a stable installation base for the elastic columns 505 and enabling them to better exert their elastic effect. The inner surface of the arc-shaped clamping piece 506 is fixedly connected to the end of the elastic column 505 away from the positioning cylinder 504. This connection method allows the elastic force of the elastic column 505 to be effectively transmitted to the arc-shaped clamping piece 506, achieving elastic clamping of the spool.

[0024] Specifically, the fixed shaft 501 provides support, the coil tray 502 can be placed at the bottom of the spool, the limiting cover 503 is connected to the fixed shaft 501 through the threaded hole 507, which can limit the spool from coming out upwards and realize the vertical positioning of the spool. The arc-shaped clamping piece 506, together with the elastic column 505, can elastically clamp the side of the spool, adapt to spools of different diameters, and enhance the stability of the fixation. Multiple sets of equally spaced locking holes are opened on the bracket 2, and the collar 3 is fixedly connected to the bracket 2 through the locking bolt 9 and the locking hole, which can flexibly adjust the height position of the guide plate 4. The guide ring 7 on the bottom surface of the guide plate 4 can guide the sewing thread and prevent the thread from getting tangled. Moreover, the two sets of guide plates 4 correspond to the spools on the two sets of fixed plates 8 respectively, which can guide multiple threads at the same time and improve sewing efficiency.

[0025] Please see the appendix Figure 1 - Appendix Figure 3The L-shaped frame 1 has multiple sets of locking components 6 arranged at equal intervals inside, and the multiple sets of locking components 6 are arranged alternately up and down. The locking component 6 includes a threaded rod 601 threadedly connected to the inside of the L-shaped frame 1. The multiple sets of locking components 6 are arranged alternately up and down. This arrangement can further optimize the fixing effect and reduce the shaking of the L-shaped frame 1 during use. The locking component 6 includes a threaded rod 601 threadedly connected to the inside of the L-shaped frame 1. The threaded rod 601 realizes its telescopic adjustment function inside the L-shaped frame 1 through the threaded connection.

[0026] An adsorption plate 602 is fixedly installed at one end of the threaded rod 601 inside the L-shaped frame 1, while a rotating block 603 is fixedly installed at the other end of the threaded rod 601 outside the L-shaped frame 1. This structure allows operators to easily adjust the contact pressure and adhesion between the adsorption plate 602 and the mounting surface by manually rotating the rotating block 603 without the need for complex tools. This adapts to different installation scenarios and equipment surface conditions, improving the convenience and flexibility of wire frame installation.

[0027] Specifically, the locking assembly 6 inside the L-shaped frame 1 and the threaded rod 601 can rotate inside the L-shaped frame 1. By rotating the rotating block 603, the extension and retraction of the threaded rod 601 can be easily adjusted. When the L-shaped frame is installed on the sewing machine, the suction plate 602 can be tightly attached to the surface of the sewing machine table. The suction force enhances the stability of the L-shaped frame installation. Moreover, multiple sets of locking assemblies 6 are arranged alternately up and down, which can fix the L-shaped frame from multiple positions, making the L-shaped frame installation more secure and reliable.

[0028] Working principle of this utility model: This utility model is a thread holder for a sewing machine. The L-shaped frame 1 is stably connected to the sewing machine table through multiple sets of locking components 6 arranged alternately inside. Specifically, rotating the rotating block 603 causes the threaded rod 601 to rotate and extend within the L-shaped frame 1, driving the suction plate 602 to tightly adhere to the surface of the machine table. The bracket 2 is fixed to the surface of the L-shaped frame 1. Each of the two sets of right-angled fixing plates 8 at its bottom end is equipped with multiple sets of positioning components 5 for placing the thread spool. The thread spool is sleeved on the fixing shaft 501, and the bottom is supported by the coil tray 502. The top is supported by the limiting cover 5. 03 The threaded connection between the threaded hole 507 and the threaded thread axially pulls out upwards. The arc-shaped clamping piece 506 elastically clamps the side of the spool under the action of the elastic column 505, ensuring that the spool is stable and can rotate flexibly. The collars 3 on both sides of the bracket 2 can be adjusted in height on the bracket 2 by locking bolts 9 and locking holes, thereby driving the guide plate 4 to the appropriate position. The guide ring 7 on the bottom of the guide plate 4 guides the sewing thread and prevents the thread from getting tangled. The two sets of guide plates 4 correspond to the spools on the two sets of fixing plates 8 respectively, and can guide multiple threads at the same time to improve sewing efficiency. At this point, the entire process is completed.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thread holder for a sewing machine, comprising an L-shaped frame (1), characterized in that: The L-shaped frame (1) is fixedly mounted with a bracket (2). Two sets of fixing plates (8) are fixedly mounted on the bottom circumferential surface of the bracket (2). Each of the two sets of fixing plates (8) is provided with multiple sets of positioning components (5). The positioning component (5) includes a fixing shaft (501) fixedly mounted on the surface of the fixing plate (8). The fixing shaft (501) is connected to an elastic column (505) and an arc-shaped clamping piece (506) through a positioning cylinder (504). A coil tray (502) is fixedly mounted on the bottom circumferential surface of the fixing shaft (501). A threaded hole (507) is opened on the top of the fixing shaft (501). A limit cover (503) is threadedly connected inside the threaded hole (507).

2. The thread holder of a sewing machine according to claim 1, characterized in that: The two sets of fixing plates (8) are set at right angles. Multiple sets of locking holes are opened on the two circumferential surfaces of the bracket (2) and are evenly distributed. Two sets of collars (3) are sleeved on the bracket (2) and the collars (3) are fixedly connected to the bracket (2) by locking bolts (9) and locking holes. Wire plates (4) are fixedly installed on the circumferential surfaces of the two sets of collars (3) and the two sets of wire plates (4) are respectively set directly above the two sets of fixing plates (8). Multiple sets of wire lifting rings (7) are fixedly installed on the bottom surface of the two sets of wire plates (4).

3. The thread holder of a sewing machine according to claim 1, characterized in that: The positioning cylinder (504) is rotatably connected to the circumferential surface of the fixed shaft (501), and the bottom of the positioning cylinder (504) is in contact with the surface of the coil tray (502). Multiple sets of elastic columns (505) are arranged in a circumferential array, and one end of each set of elastic columns (505) is fixedly installed on the circumferential surface of the positioning cylinder (504).

4. The thread holder of a sewing machine according to claim 1, characterized in that: Multiple sets of the arc-shaped clamping pieces (506) are provided, and the inner surface of the arc-shaped clamping pieces (506) is fixedly connected to the end of the elastic column (505) away from the positioning cylinder (504).

5. The thread holder of a sewing machine according to claim 1, characterized in that: The L-shaped frame (1) is provided with multiple sets of locking components (6) distributed at equal intervals inside, and the multiple sets of locking components (6) are arranged alternately up and down. The locking component (6) includes a threaded rod (601) threadedly connected to the inside of the L-shaped frame (1).

6. The thread holder of a sewing machine according to claim 5, characterized in that: An adsorption plate (602) is fixedly installed at one end of the threaded rod (601) inside the L-shaped frame (1), while a rotating block (603) is fixedly installed at the other end of the threaded rod (601) outside the L-shaped frame (1).

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