Thread clamping mechanism of automatic sewing machine

Abstract

The utility model belongs to the field of thread clamping mechanisms, particularly relates to a thread clamping mechanism of an automatic sewing machine, and aims to solve the problem that after the position of an adjusting knob of existing equipment is adjusted, the adjusting knob is touched, and the adjusted pressure is easy to change, the following scheme is provided: the thread clamping mechanism comprises a fixed seat, and one side of the fixed seat is fixedly connected with a threaded column; one end of the threaded column is provided with a receding groove, the circumference of the threaded column is sleeved with two thread clamping pieces for clamping threads, the circumference of the threaded column is in threaded connection with an adjusting knob, and a spring is arranged between the adjusting knob and one of the thread clamping pieces; according to the utility model, after the inserting rod abuts against the rubber pad, the adjusting knob can be prevented from rotating, the adjusted wire clamping pressure is prevented from changing, the use stability is improved, meanwhile, the position of the top sheet can be adjusted by rotating the rotating shaft, the position of the inserting rod is further adjusted, the operation is convenient and rapid, and the working efficiency is improved. And tools are prevented from being used and people can use conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of thread clamping mechanisms, in particular to a thread clamping mechanism of an automatic sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so that one or more layers of sewing material are interwoven or sewn together. When using a sewing machine, a thread clamping mechanism is required to fix the thread end to prevent the thread end from slipping or shaking and causing problems such as loose thread or thread gaps.

[0003] After searching, it was found that the publication number CN211036358U discloses a thread clamping structure for a sewing machine, wherein a limiting groove is provided on the upper surface of the fixed rod, and a cross bar is provided at one side of the upper end of the fixed rod. Although the above structure can extend the service life of the thread clamp when in use, after adjusting the position of the adjusting knob, the adjusting knob is touched, which easily changes the adjusted pressure. Therefore, a thread clamping mechanism for an automatic sewing machine is proposed. Utility Model Content

[0004] The utility model aims to solve the defect in the prior art that after the position of the adjusting knob is adjusted, the adjusting knob is touched, which easily changes the adjusted pressure, and proposes a thread clamping mechanism for an automatic sewing machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A thread clamping mechanism of an automatic sewing machine, comprising a fixing seat, a threaded column fixedly connected to one side of the fixing seat, a clearance groove arranged at one end of the threaded column, two thread clamping pieces for thread clamping arranged on the circumference of the threaded column, an adjusting knob connected to the circumference of the threaded column, a spring arranged between the adjusting knob and one of the thread clamping pieces;

[0007] A positioning ring is fixedly connected to one side of the adjusting knob, a sliding sleeve is slidably connected in the giving way groove, a penetrating insertion rod is inserted into the top and bottom of the sliding sleeve, a rotating shaft is rotatably connected to the inner wall of one side of the threaded column, the rotating shaft rotates and penetrates the sliding sleeve, and two top sheets are fixedly connected to the circumference of the rotating shaft, one end of the top sheet is set with an arc surface and used in conjunction with the insertion rod.

[0008] As a further solution of the utility model, a first retaining ring and a second retaining ring are respectively provided at both ends of the spring, the first retaining ring abuts against one of the wire clamping pieces, and the second retaining ring abuts against the adjusting knob.

[0009] As a further solution of the utility model, a rotating knob is sleeved on one end of the rotating shaft.

[0010] As a further solution of the utility model, one end of the rotating shaft is threadedly connected with a positioning bolt for clamping and fixing the rotating knob.

[0011] As a further solution of the utility model, one side of the fixing seat is threadedly connected with a top screw.

[0012] As a further solution of the utility model, a rubber pad used in conjunction with the insertion rod is fixedly connected to the circumferential inner wall of the adjusting knob.

[0013] As a further solution of the present invention, a plurality of anti-sliding blocks are integrally formed on the circumferential outer wall of the adjusting knob.

[0014] As a further solution of the utility model, a plurality of anti-slip grooves are arranged on the circumference of the positioning bolt.

[0015] In the present application, during installation, the top screw is removed, and then the fixing seat is inserted into the sewing machine. After being inserted into place, the fixing seat is fixed by the top screw, the two thread clamps are separated, and then the sewing thread is wound between the two thread clamps, and one of the thread clamps is pushed by the elastic force of the spring, and then the sewing thread is clamped by the two thread clamps. After determining the thread clamping force, the rotating shaft is driven to rotate by turning the rotating knob, and the rotating shaft drives the top plate to rotate. Since one end of the top plate is set as an arc surface, the insertion rod is pushed upward, and the insertion rod contacts the rubber pad and then applies pressure to the adjustment knob to prevent the adjustment knob from rotating, thereby avoiding changes in the adjusted thread clamping pressure and improving the stability of use. When the thread clamping pressure needs to be adjusted again, the rotating shaft is rotated in the opposite direction, so that the top plate can be separated from the conflict with the insertion rod. The operation is convenient and fast, and the use of tools is avoided.

[0016] Beneficial effects:

[0017] In the utility model, the thread clamping mechanism of the automatic sewing machine is provided with a movable inserting rod installed inside the adjusting knob, so that after the inserting rod contacts the rubber pad, the adjusting knob can be prevented from rotating, so that the adjusted thread clamping pressure is prevented from changing, and the stability of use is improved;

[0018] In the utility model, the thread clamping mechanism of the automatic sewing machine is provided with a top sheet installed on the rotating shaft, so that the position of the top sheet can be adjusted by rotating the rotating shaft, which is convenient and fast to operate, avoids the use of tools, and is convenient for people to use;

[0019] In the utility model, after the insertion rod collides with the rubber pad, the adjustment knob can be prevented from rotating, so as to avoid changes in the adjusted wire clamping pressure, thereby improving the stability of use. At the same time, rotating the rotating shaft can adjust the position of the top plate, thereby adjusting the position of the insertion rod. The operation is convenient and fast, and the use of tools is avoided, which is convenient for people to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a thread clamping mechanism of an automatic sewing machine proposed by the utility model;

[0021] Figure 2 This is a cross-sectional structural diagram of a thread clamping mechanism of an automatic sewing machine proposed by the utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the threaded column of a thread clamping mechanism of an automatic sewing machine proposed by the utility model;

[0023] Figure 4 The utility model is a schematic diagram of the rotating shaft installation structure of the thread clamping mechanism of an automatic sewing machine.

[0024] In the figure: 1. fixing seat; 2. top screw; 3. wire clamp; 4. first retaining ring; 5. threaded column; 6. adjusting knob; 7. spring; 8. second retaining ring; 9. sliding sleeve; 10. positioning ring; 11. rubber pad; 12. insertion rod; 13. rotating knob; 14. positioning bolt; 15. top plate; 16. rotating shaft. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Example 1

[0027] Reference Figure 1-Figure 4 A thread clamping mechanism comprises: a fixed seat 1, a threaded column 5 is fixedly connected to one side of the fixed seat 1, a yielding groove is arranged at one end of the threaded column 5, two thread clamping pieces 3 for thread clamping are sleeved on the circumference of the threaded column 5, the thread clamping piece 3 is in the shape of a plate, and it is convenient for the sewing thread to be put between the two thread clamping pieces 3, an adjusting knob 6 is threadedly connected to the circumference of the threaded column 5, a spring 7 is arranged between the adjusting knob 6 and one of the thread clamping pieces 3, and the elastic force of the spring 7 is used to push one of the thread clamping pieces 3, and then the two thread clamping pieces 3 are used to clamp the sewing thread;

[0028] A positioning ring 10 is fixedly connected to one side of the adjusting knob 6, and a sliding sleeve 9 is slidably connected in the giving way groove. The sliding sleeve 9 is stabilized in the adjusting knob 6 by the positioning ring 10. When the adjusting knob 6 moves, the sliding sleeve 9 can be pushed to move. A penetrating plug rod 12 is inserted into the top and bottom of the sliding sleeve 9. A rotating shaft 16 is rotatably connected to the inner wall of one side of the threaded column 5. The rotating shaft 16 rotates and penetrates the sliding sleeve 9. Two top plates 15 are fixedly connected to the circumference of the rotating shaft 16. One end of the top plate 15 is set with an arc surface and is used in conjunction with the plug rod 12. The rotating shaft 16 drives the top plate 15 to rotate. Since one end of the top plate 15 is set with an arc surface, the plug rod 12 is pushed upward. After the plug rod 12 conflicts with the rubber pad 11, pressure is applied to the adjusting knob 6 to prevent the adjusting knob 6 from rotating, avoid changes in the adjusted clamping pressure, and improve the stability of use.

[0029] In the utility model, a first retaining ring 4 and a second retaining ring 8 are respectively provided at both ends of the spring 7. The first retaining ring 4 abuts against one of the clamping pieces 3, and the second retaining ring 8 abuts against the adjusting knob 6. The first retaining ring 4 and the second retaining ring 8 prevent wear of the clamping piece 3 and the adjusting knob 6.

[0030] In the utility model, a rotating knob 13 is sleeved on one end of the rotating shaft 16 , and the rotating knob 13 is used to facilitate people to rotate the rotating shaft 16 .

[0031] In particular, one end of the rotating shaft 16 is threadedly connected with a positioning bolt 14 for clamping and fixing the rotating knob 13 , and the positioning bolt 14 plays a role in fixing the rotating knob 13 .

[0032] It should be noted that a top screw 2 is threadedly connected to one side of the fixing seat 1 , and the top screw 2 passes through a sewing machine to facilitate fixing the fixing seat 1 .

[0033] The present application can be used for thread clamping of sewing machines, and can also be used in other fields applicable to the present application.

[0034] Example 2

[0035] refer to Figure 1-Figure 4 , improved on the basis of Example 1: a thread clamping mechanism of an automatic sewing machine,

[0036] In particular, a rubber pad 11 for use with the insertion rod 12 is fixedly connected to the inner circumferential wall of the adjusting knob 6 . The rubber pad 11 has deformation capability, and is convenient for use with the insertion rod 12 .

[0037] It should be noted that a plurality of anti-slip blocks are integrally formed on the circumferential outer wall of the adjusting knob 6 , and the anti-slip blocks increase the anti-slip property of the adjusting knob 6 , making it easier to rotate the adjusting knob 6 .

[0038] In particular, a plurality of anti-skid grooves are provided on the circumference of the positioning bolt 14 , and the anti-skid grooves facilitate people to rotate the positioning bolt 14 .

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thread clamping mechanism for an automatic sewing machine, comprising a fixing seat (1), characterized in that: A threaded column (5) is fixedly connected to one side of the fixing seat (1), a clearance groove is provided at one end of the threaded column (5), two clamping pieces (3) for clamping the wire are sleeved around the circumference of the threaded column (5), an adjusting knob (6) is threadedly connected to the circumference of the threaded column (5), and a spring (7) is provided between the adjusting knob (6) and one of the clamping pieces (3); A positioning ring (10) is fixedly connected to one side of the adjusting knob (6), a sliding sleeve (9) is slidably connected in the giving way groove, and a penetrating rod (12) is inserted into the top and bottom of the sliding sleeve (9), and a rotating shaft (16) is rotatably connected to the inner wall of one side of the threaded column (5), and the rotating shaft (16) rotatably penetrates the sliding sleeve (9), and two top plates (15) are fixedly connected to the circumference of the rotating shaft (16), and one end of the top plates (15) is set with an arc surface and is used in conjunction with the inserting rod (12).

2. The thread clamping mechanism of an automatic sewing machine according to claim 1, characterized in that: A first retaining ring (4) and a second retaining ring (8) are respectively provided at both ends of the spring (7); the first retaining ring (4) abuts against one of the clamping pieces (3), and the second retaining ring (8) abuts against the adjusting knob (6).

3. The thread clamping mechanism of an automatic sewing machine according to claim 1, characterized in that: One end of the rotating shaft (16) is sleeved with a rotating knob (13).

4. The thread clamping mechanism of an automatic sewing machine according to claim 3, characterized in that: One end of the rotating shaft (16) is threadedly connected to a positioning bolt (14) for clamping and fixing the rotating knob (13).

5. The thread clamping mechanism of an automatic sewing machine according to claim 1, characterized in that: A top screw (2) is threadedly connected to one side of the fixing seat (1).

6. The thread clamping mechanism of an automatic sewing machine according to claim 1, characterized in that: A rubber pad (11) used in conjunction with the insertion rod (12) is fixedly connected to the circumferential inner wall of the adjusting knob (6).

7. The thread clamping mechanism of an automatic sewing machine according to claim 1, characterized in that: The circumferential outer wall of the adjusting knob (6) is integrally formed with a plurality of anti-sliding blocks.

8. The thread clamping mechanism of an automatic sewing machine according to claim 4, characterized in that: The circumference of the positioning bolt (14) is provided with a plurality of anti-slip grooves.

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