Sewing machine with thread shifting structure

Abstract

The utility model discloses a sewing machine with a thread shifting structure, and relates to the related technical field of sewing machines. The sewing machine comprises a sewing machine body, the sewing machine body is fixedly connected with a thread shifting frame through a bolt, the thread shifting frame is fixedly provided with a driving motor through a motor installation support, an output shaft of the driving motor is fixedly sleeved with a rotating disc, and the rotating disc is fixedly connected with a connecting sliding rod through a locknut. The driving motor drives the rotating disc to rotate, the thread shifting rotating rod can be driven to move back and forth around the connecting column head through cooperation of the connecting sliding rod, the connecting rod and the rear connecting column, and therefore the thread shifting hook can be driven to move back and forth to shift threads of the sewing machine, and an external structure does not need to be used for assisting the thread shifting rotating rod to reset. And a limiting structure does not need to be installed to limit the thread shifting rotating rod, so that the thread shifting structure of the sewing machine is more concise, and the moving range of the thread shifting rotating rod can be flexibly adjusted by moving and adjusting the connecting sliding rod along the adjusting groove.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the sewing machine related technical field, especially, it is related to a sewing machine with thread shifting structure. BACKGROUND

[0002] Sewing machine is used one or more sewing thread, on the sewing material forms one or more stitch, makes one or more sewing material interweaves or sews up the machine. Through the search, the patent of application No. 201821382912. X discloses a kind of intelligent sewing machine thread shifter, including support, the side wall of the support is fixedly connected with motor, the output of the motor is fixedly connected with drive connecting rod, the drive connecting rod is threadedly connected with horizontal connecting rod by connecting bolt, one end of the horizontal connecting rod is threadedly connected with rotating rod by connecting bolt, the rotating rod is rotatably connected with support by knob, one end of the rotating rod is equipped with bolt fixing hole, the rotating rod is threadedly connected with thread pulling hook by bolt through bolt fixing hole.

[0003] But in the process of actual use, applicant finds that, in the process of driving rotating rod to drive thread pulling hook reciprocating movement, it needs to reset rotating rod by means of return spring, and needs to limit rotating rod by installing limiting rubber block, so that the thread shifting structure of sewing machine is not simple enough, in view of this, we propose a kind of sewing machine with thread shifting structure. CONTENT OF UTILITY MODEL

[0004] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0005] The utility model discloses a kind of sewing machines with thread shifting structure, including sewing machine body, the sewing machine body is fixedly connected with thread shifting frame by bolt, driving motor is fixedly arranged on the thread shifting frame by motor mounting support, the output shaft of the driving motor is fixedly connected with carousel, the connecting slide is fixedly connected with the connecting slide on the carousel by locknut, the carousel is equipped with adjusting groove, the middle part of the connecting slide is fixedly provided with abutting round plate, one end of the connecting slide is provided with front connecting column, the other end of the connecting slide is equipped with the threaded portion of screw thread cooperation with the locknut, the connecting slide is movably penetrated adjusting groove, the outer wall of the thread shifting frame on the rear side of the carousel is fixedly provided with connecting column head, the connecting column head is movably connected with thread shifting rotating rod, the lower end of the thread shifting rotating rod is fixedly connected with thread pulling hook by screw, and the upper part between the thread shifting rotating rod and the connecting slide is movably connected by connecting rod.

[0006] Preferably, the side of the abutting round plate away from the front connecting column abuts on the side of the carousel away from the sewing machine body.

[0007] Preferably, the connecting slide rod slides along the adjusting groove, and the lock nut abuts against the rotating disc on the side close to the sewing machine body.

[0008] Preferably, a rear connecting column is fixedly arranged on the outer wall of the thread shifting rotating rod.

[0009] Preferably, the front end of the connecting rod is movably sleeved on the front connecting column through a bearing, and the rear end of the connecting rod is movably sleeved on the rear connecting column through a bearing.

[0010] Preferably, a mounting slot is arranged at the lower end of the thread shifting rotating rod, the upper part of the thread hook is provided with a mounting block, and one end of the screw penetrates through the through hole on the thread shifting rotating rod and is screwed into the threaded hole arranged on the mounting block.

[0011] The sewing machine with the thread shifting structure has the following beneficial effects:

[0012] The sewing machine with the thread shifting structure has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0014] Figure 1 It is a top view structural schematic diagram of the sewing machine with the thread shifting structure of the present application;

[0015] Figure 2 It is a bottom view structural schematic diagram of the sewing machine with the thread shifting structure of the present application;

[0016] Figure 3 It is a structural schematic diagram of the connecting slide rod in the sewing machine with the thread shifting structure of the present application;

[0017] Figure 4 It is a structural schematic diagram of the thread hook in the sewing machine with the thread shifting structure of the present application.

[0018] In the drawings, the components represented by each reference numeral are listed as follows:

[0019] 1, sewing machine body; 2, bolt; 3, thread rack; 31, motor mounting bracket; 32, connecting column head; 4, rotary disc; 41, adjusting groove; 5, driving motor; 6, connecting slide rod; 61, abutting round plate; 62, front connecting column; 63, threaded part; 7, thread rack rotating rod; 71, rear connecting column; 72, mounting notch; 8, thread hook; 81, mounting block; 9, connecting rod; 10, screw; 11, lock nut. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-4 The present application provides a technical solution:

[0022] The utility model provides a sewing machine with thread shifting structure, including sewing machine body 1, and the bolt 2 fixed connection has the thread shifting frame 3 on sewing machine body 1, and the driving motor 5 is fixedly arranged on the thread shifting frame 3 through motor mounting support 31, and the output shaft of driving motor 5 is sleeved with the rotary table 4, and the connecting slide bar 6 is fixedly connected on the rotary table 4 through the lock nut 11, and the outer wall of the thread shifting frame 3 on the rear side of rotary table 4 is fixedly provided with the connecting stud 32, and the thread shifting rotary rod 7 is movably sleeved on the connecting stud 32, and the outer wall of thread shifting rotary rod 7 is fixedly provided with the rear connecting stud 71, and the lower end of thread shifting rotary rod 7 is fixedly connected with the thread shifting hook 8 through screw 10, and the lower end of thread shifting rotary rod 7 is provided with the installation slot 72, and the upper portion of thread shifting hook 8 is provided with the mounting block 81, and one end of screw 10 penetrates the through hole on thread shifting rotary rod 7 and is screwed into the threaded hole on mounting block 81, and by unscrewing screw 10, personnel can replace thread shifting hook 8, and the upper portion of thread shifting rotary rod 7 is movably connected with connecting slide bar 6 through connecting rod 9, and the front end of connecting rod 9 is movably sleeved on the front connecting stud 62 through bearing, and the rear end of connecting rod 9 is movably sleeved on the rear connecting stud 71 through bearing, and by driving rotary table 4 to rotate through driving motor 5, connecting slide bar 6, connecting rod 9 and rear connecting stud 71 can drive thread shifting rotary rod 7 to reciprocate around connecting stud 32, so as to drive thread shifting hook 8 to reciprocate and shift the sewing machine, without the need for external structure to assist thread shifting rotary rod 7 to move back, and without the need for installing limiting structure to limit thread shifting rotary rod 7, so that the thread shifting structure of sewing machine is more simple, and in use, driving motor 5 is driven to rotate rotary table 4, and rotary table 4 can drive connecting slide bar 6 to rotate, and connecting slide bar 6, connecting rod 9 and rear connecting stud 71 can drive thread shifting rotary rod 7 to reciprocate around connecting stud 32, and thread shifting hook 8 can be driven to reciprocate through thread shifting rotary rod 7, and thread shifting hook 8 can shift the sewing machine.

[0023] The connecting slide rod 6 movably penetrates the adjusting groove 41, the connecting slide rod 6 slides along the adjusting groove 41, the lock nut 11 is abutted on one side of the rotating disc 4 close to the sewing machine body 1, the rotating disc 4 is provided with the adjusting groove 41, the middle part of the connecting slide rod 6 is fixedly provided with the abutting circular plate 61, the side of the abutting circular plate 61 away from the front connecting column 62 is abutted on the side of the rotating disc 4 away from the sewing machine body 1, one end of the connecting slide rod 6 is provided with the front connecting column 62, the other end of the connecting slide rod 6 is provided with the threaded part 63 which is screwed with the lock nut 11, the moving range of the thread shifting rotating rod 7 can be flexibly adjusted by moving the connecting slide rod 6 along the adjusting groove 41, and the use requirement can be better met, when the moving range of the thread shifting rotating rod 7 needs to be adjusted, the lock nut 11 can be loosened, the connecting slide rod 6 is slid along the adjusting groove 41 to the appropriate position, then the lock nut 11 is tightened again to fix the position of the connecting slide rod 6, the distance between the front end of the connecting rod 9 and the axis of the rotating disc 4 can be adjusted, and the moving range of the thread shifting rotating rod 7 can be quickly adjusted.

[0024] Working principle: when in use, the rotating disc 4 is driven to rotate by the driving motor 5, the connecting slide rod 6 is driven to rotate together, the thread shifting rotating rod 7 is driven to reciprocate around the connecting column head 32 by the cooperation of the connecting slide rod 6, the connecting rod 9 and the rear connecting column 71, the thread shifting hook 8 is driven to reciprocate by the thread shifting rotating rod 7, and the thread of the sewing machine is shifted by the thread shifting hook 8, when the moving range of the thread shifting rotating rod 7 needs to be adjusted, the lock nut 11 can be loosened, the connecting slide rod 6 is slid along the adjusting groove 41 to the appropriate position, then the lock nut 11 is tightened again to fix the position of the connecting slide rod 6, the distance between the front end of the connecting rod 9 and the axis of the rotating disc 4 can be adjusted, and the moving range of the thread shifting rotating rod 7 can be quickly adjusted.

[0025] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification to the technical solutions described in the foregoing embodiments, and equivalent replacement of part of the technical features, all belong to the protection scope of the present application.

Claims

1. A sewing machine having a thread pulling structure, comprising a sewing machine body (1), characterized in that: The sewing machine body (1) is fixedly connected with a thread guide frame (3) through a bolt (2), the thread guide frame (3) is fixedly provided with a driving motor (5) through a motor mounting bracket (31), the output shaft of the driving motor (5) is sleeved with a rotating disc (4), the rotating disc (4) is fixedly connected with a connecting slide rod (6) through a lock nut (11), the rotating disc (4) is provided with an adjusting groove (41), the middle part of the connecting slide rod (6) is fixedly provided with an abutting circular plate (61), one end of the connecting slide rod (6) is provided with a front connecting column (62), the other end of the connecting slide rod (6) is provided with a threaded part (63) which is screwed with the lock nut (11), the connecting slide rod (6) movably penetrates the adjusting groove (41), the outer wall of the thread guide frame (3) on the rear side of the rotating disc (4) is fixedly provided with a connecting column head (32), the connecting column head (32) movably sleeves with a thread guide rotating rod (7), the lower end of the thread guide rotating rod (7) is fixedly connected with a thread guide hook (8) through a screw (10), the upper part of the thread guide rotating rod (7) is movably connected with the connecting slide rod (6) through a connecting rod (9).

2. The sewing machine having a thread shifting structure according to claim 1, wherein The side, away from the front connecting column (62), of the abutting circular plate (61) abuts on the side, away from the sewing machine body (1), of the rotating disc (4).

3. The sewing machine having a thread shifting structure according to claim 1, wherein The connecting slide rod (6) slides along the adjusting groove (41), and the lock nut (11) abuts on the side, close to the sewing machine body (1), of the rotating disc (4).

4. The sewing machine having a thread shifting structure according to claim 1, wherein The outer wall of the thread guide rotating rod (7) is fixedly provided with a rear connecting column (71).

5. The sewing machine having a thread shifting structure according to claim 4, wherein The front end of the connecting rod (9) movably sleeves on the front connecting column (62) through a bearing, and the rear end of the connecting rod (9) movably sleeves on the rear connecting column (71) through a bearing.

6. The sewing machine having a thread shifting structure according to claim 1, wherein The lower end of the thread guide rotating rod (7) is provided with a mounting slot (72), the upper part of the thread guide hook (8) is provided with a mounting block (81), and one end of the screw (10) penetrates through the through hole on the thread guide rotating rod (7) and is screwed into the threaded hole on the mounting block (81).

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