Take-up device for sewing machine

Abstract

The utility model relates to the field of sewing machines, and discloses a take-up device for a sewing machine, which comprises a mounting plate, a motor is fixedly connected to the bottom of the mounting plate, a rotating sleeve rotatably connected to the top of the mounting plate is fixedly connected to the outer side of an output shaft of the motor, and a threaded rod is rotatably connected to the inside of the rotating sleeve. The outer side of the threaded rod is in transmission connection with an extrusion block, the interior of the rotating sleeve is fixedly connected with a limiting rod slidably connected with the interior of the extrusion block, and the outer side of the threaded rod is fixedly connected with a rotary knob rotationally connected with the top of the rotating sleeve. Four fixing devices which are symmetrically distributed in pairs in the front, back, left and right directions are arranged in the rotating sleeve, and each fixing device comprises a connecting rod which is in sliding connection with the interior of the rotating sleeve. The thread take-up device for the sewing machine has the advantages that the thread spool can be fixed, and the thread spool can automatically take up threads.

Description

Technical Field

[0001] The utility model relates to the field of sewing machines, in particular to a thread taking-up device for sewing machines. Background Art

[0002] Human life is inseparable from food, clothing, housing and transportation. Clothing is a necessity of people's lives, and the clothing industry is also booming. In the production and processing of clothing, sewing machines are often used. Sewing machines use one or more sewing threads to form one or more stitches on the sewing material to interweave or sew one or more layers of sewing materials. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and synthetic fibers, and products such as leather, plastic, and paper. The stitches are neat, beautiful, flat and firm, with fast sewing speed and easy use.

[0003] Thread is a textile material used for sewing machines. Thread is generally wound on a bobbin for storage. However, sometimes the bobbin falls due to human error or the thread needs to be rewound. Operators often need to manually rewind the thread. Manual rewinding is not only inefficient, but also wastes manpower and is inconvenient. Therefore, a thread rewinding device for a sewing machine is proposed to solve the above problem. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a thread taking-up device for a sewing machine, which has the advantage of being able to fix the thread spool so that the thread spool can automatically reel in the thread, thereby solving the problem that the thread is a textile material used in sewing machines and the thread is generally reeled on a thread spool for storage, but sometimes the thread spool falls due to human error or the thread needs to be reeled in, and the operator often needs to manually reel in the thread, which is not only inefficient but also wastes manpower and is relatively inconvenient.

[0006] (II) Technical solution

[0007] The utility model solves the above-mentioned technical problem with the following technical solution: A thread take-up device for a sewing machine comprises a mounting plate, a motor is fixedly connected to the bottom of the mounting plate, a rotating sleeve rotatably connected to the top of the mounting plate is fixedly connected to the outer side of the output shaft of the motor, a threaded rod is rotatably connected to the inside of the rotating sleeve, an extrusion block is transmission-connected to the outer side of the threaded rod, a limiting rod slidably connected to the inside of the extrusion block is fixedly connected to the inside of the rotating sleeve, a knob rotatably connected to the top of the rotating sleeve is fixedly connected to the outer side of the threaded rod, and four fixing devices are arranged inside the rotating sleeve and are symmetrically distributed in pairs in front, back, left and right.

[0008] The beneficial effects of the utility model are:

[0009] The thread-receiving device for a sewing machine has the advantage of being able to fix a thread spool and automatically reeling the thread on the thread spool.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the single fixing device includes a connecting rod slidably connected to the inside of the rotating sleeve, a fixing plate is fixedly connected to the outer side of one end of the connecting rod away from the axis of the rotating sleeve, and a spring fixedly connected to the outer side of the rotating sleeve is fixedly connected to the inner side of the fixing plate.

[0012] The beneficial effect of adopting the above further solution is that the inside of the spool can be fixed to prevent the spool from falling when the wire is rotated and reeled in.

[0013] Furthermore, the fixing plate is arranged in an arc shape, the extrusion block is arranged in a truncated cone shape which is wide at the top and narrow at the bottom, the connecting rod is arranged in a trapezoidal shape which is narrow at the top and wide at the bottom, and the extrusion block and the connecting rod have the same inclined angle.

[0014] The beneficial effect of adopting the above further solution is that the fixing plate can be moved outward to fix the bobbin, so that the bobbin and the rotating sleeve can rotate synchronously.

[0015] Furthermore, a guide plate is fixedly connected to the top of the mounting plate, and a wire hole is provided inside the guide plate.

[0016] The beneficial effect of adopting the above further solution is that the line can be pulled to prevent the line from getting stuck and knotted during rapid contraction.

[0017] Furthermore, a clearance groove is provided inside the knob, a baffle is slidably connected inside the clearance groove, a first clearance hole is provided inside the clearance groove, and a pin penetrating through and extending to the outside of the baffle is slidably connected inside the first clearance hole.

[0018] The beneficial effect of adopting the above further solution is that the top space of the spool can be limited to prevent it from falling out from above during the rotation process.

[0019] Furthermore, the give-way groove is concavely arranged, the width of the baffle plate is greater than the inner width of the give-way groove, and a second give-way hole is provided inside the give-way groove.

[0020] The beneficial effect of adopting the above further solution is that the position of the baffle can be adjusted, thereby not affecting the placement and removal of the spool. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the rotating sleeve of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the rotating sleeve of the utility model;

[0024] Figure 4 It is a schematic diagram of the side structure of the utility model.

[0025] In the figure: 1. mounting plate; 2. motor; 3. rotating sleeve; 4. threaded rod; 5. extrusion block; 6. limit rod; 7. knob; 8. fixing device; 81. connecting rod; 82. fixing plate; 83. spring; 9. guide plate; 10. baffle; 11. latch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the embodiment, Figure 1-4 A thread taking-up device for a sewing machine is provided. The utility model comprises a mounting plate 1, a motor 2 is fixedly connected to the bottom of the mounting plate 1, a rotating sleeve 3 rotatably connected to the top of the mounting plate 1 is fixedly connected to the outer side of the output shaft of the motor 2, a threaded rod 4 is rotatably connected to the inside of the rotating sleeve 3, an extrusion block 5 is transmission-connected to the outer side of the threaded rod 4, a limiting rod 6 slidably connected to the inside of the extrusion block 5 is fixedly connected to the inside of the rotating sleeve 3, a knob 7 rotatably connected to the top of the rotating sleeve 3 is fixedly connected to the outer side of the threaded rod 4, and four fixing devices 8 are arranged inside the rotating sleeve 3 and are symmetrically distributed in pairs in front, back, left and right.

[0028] Among them, the single fixing device 8 includes a connecting rod 81 slidably connected to the inside of the rotating sleeve 3, and the outer side of the connecting rod 81 away from the axis of the rotating sleeve 3 is fixedly connected to a fixing plate 82, and the inner side of the fixing plate 82 is fixedly connected to a spring 83 fixedly connected to the outer side of the rotating sleeve 3.

[0029] Due to the tension of the spring 83, the fixed plate 82 is usually close to the rotating sleeve 3 and maintains a contracted state.

[0030] The fixing plate 82 is arranged in an arc shape, the extrusion block 5 is arranged in a truncated cone shape which is wide at the top and narrow at the bottom, the connecting rod 81 is arranged in a trapezoid shape which is narrow at the top and wide at the bottom, and the extrusion block 5 and the connecting rod 81 have the same inclined angle.

[0031] When the extrusion block 5 moves downward, it will squeeze the four connecting rods 81, so that the four fixing plates 82 move outward, so that the fixing plates 82 fit the inside of the bobbin for fixing. After the extrusion block 5 is moved upward, the fixing plates 82 will return to their original positions under the action of the springs 83.

[0032] The top of the mounting plate 1 is fixedly connected with a guide plate 9 , and a wire hole is provided inside the guide plate 9 .

[0033] The wire to be reeled in is passed through the wire hole, and the wire will run along the path provided by the wire hole, and then pass through the rotating sleeve 3 to be reeled in.

[0034] The knob 7 has a clearance groove inside, a baffle 10 is slidably connected inside the clearance groove, a first clearance hole is inside the clearance groove, a latch 11 penetrating through and extending to the outside of the baffle 10 is slidably connected inside the first clearance hole.

[0035] When the latch 11 is taken out, the baffle 10 and the clearance groove can slide relative to each other, and the baffle 10 can block the fixed spool after being moved.

[0036] The give-way groove is concave, the width of the baffle 10 is greater than the inner width of the give-way groove, and a second give-way hole is provided inside the give-way groove.

[0037] The baffle 10 can only slide in the horizontal direction, but cannot move in the up-down direction, and the bobbin cannot lift up the baffle 10 and be taken out directly from the top.

[0038] Working principle:

[0039] First, place the spool outside the rotating sleeve 3, and then turn the knob 7. The squeezing block 5 will move under the action of the thread of the threaded rod 4, and will move downward and squeeze the connecting rod 81. The connecting rod 81 will push the fixing plate 82 to move outward, thereby fixing the inside of the spool. Then, take the pin 11 out of the first make way groove, move the baffle 10 and fix the pin in the second make way groove. At this time, the baffle 10 blocks the top of the spool. Finally, pass the wire through the wire hole and tie it to the spool. Start the motor 2 to reel in the wire. After reeling is completed, return the pin 11 to its position, rotate the knob 7 in the opposite direction, and the fixing plate 82 is retracted under the action of the spring 83, and the reeled spool can be taken out.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thread take-up device for a sewing machine, comprising a mounting plate (1), characterized in that: The bottom of the mounting plate (1) is fixedly connected to a motor (2); the outer side of the output shaft of the motor (2) is fixedly connected to a rotating sleeve (3) rotatably connected to the top of the mounting plate (1); the interior of the rotating sleeve (3) is rotatably connected to a threaded rod (4); the outer side of the threaded rod (4) is transmission-connected to an extrusion block (5); the interior of the rotating sleeve (3) is fixedly connected to a limit rod (6) slidably connected to the interior of the extrusion block (5); the outer side of the threaded rod (4) is fixedly connected to a knob (7) rotatably connected to the top of the rotating sleeve (3); and the interior of the rotating sleeve (3) is provided with four fixing devices (8) symmetrically distributed in pairs in front, back, left and right directions.

2. A thread take-up device for a sewing machine according to claim 1, characterized in that: The single fixing device (8) comprises a connecting rod (81) slidably connected to the inside of the rotating sleeve (3); the outer side of one end of the connecting rod (81) away from the axis of the rotating sleeve (3) is fixedly connected to a fixing plate (82); the inner side of the fixing plate (82) is fixedly connected to a spring (83) fixedly connected to the outer side of the rotating sleeve (3).

3. A thread take-up device for a sewing machine according to claim 2, characterized in that: The fixing plate (82) is arranged in an arc shape, the extrusion block (5) is arranged in a truncated cone shape that is wide at the top and narrow at the bottom, the connecting rod (81) is arranged in a trapezoidal shape that is narrow at the top and wide at the bottom, and the extrusion block (5) and the connecting rod (81) have the same inclined surface angle.

4. A thread take-up device for a sewing machine according to claim 1, characterized in that: A guide plate (9) is fixedly connected to the top of the mounting plate (1), and a wire hole is provided inside the guide plate (9).

5. A thread take-up device for a sewing machine according to claim 1, characterized in that: The knob (7) is provided with a clearance groove inside, the inside of which is slidably connected to a baffle (10), the inside of which is provided with a first clearance hole, the inside of which is slidably connected to a latch pin (11) penetrating through and extending to the outside of the baffle (10).

6. A thread take-up device for a sewing machine according to claim 5, characterized in that: The give-way groove is concavely arranged, the width of the baffle plate (10) is greater than the inner width of the give-way groove, and a second give-way hole is provided inside the give-way groove.

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