Threading structure of sewing machine
By introducing lifting components and buffering components into the threading device of the sewing machine, the problem that the threading device in the prior art cannot adapt to sewing needles of different lengths and is prone to damage is solved, flexible threading operations and long life of the device are achieved, and the maintenance process is simplified.
Patent Information
- Application Number
- CN202421680729.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The existing sewing machine threading device cannot adjust the height of the threading head, which makes it impossible to adapt to sewing needles of different lengths. It is easy to collide when the device is not aligned with the needle, causing damage, and the device is not convenient for disassembly and repair.
A sewing machine threading structure including a lifting assembly and a buffering assembly is designed, and the height of the threading head is adjusted by the lifting assembly and providing buffer protection in the event of a collision through the buffering assembly, improving the service life of the device, while simplifying the disassembly and replacement process of the device.
It realizes flexible threading operation for sewing needles of different lengths, avoids collision and damage between threading device and sewing needle, improves the service life of the device, and simplifies the later replacement and maintenance process.
Smart Images
Figure CN222878292U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewing machines, in particular to a threading structure of a 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 materials are interwoven or sewn together. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and artificial fibers, as well as products such as leather, plastic, and paper. The stitches are neat, beautiful, flat, and firm, and the sewing speed is fast and easy to use. It has also derived art forms such as hand-push embroidery and computer embroidery. Sewing machines are widely used in industrial production.
[0003] Nowadays, sewing machines have a high degree of automation, but threading still needs to be done manually. Therefore, some threading devices have appeared to assist the users of sewing machines in threading the needles. However, when the threading device is threading the sewing needle, the height position of the perforation rod cannot be changed, resulting in the inability to thread sewing needles of different lengths. At the same time, when the threading device and the sewing needle are not aligned during operation, the threading device and the sewing needle may collide and be damaged easily. At the same time, the threading device is inconvenient to disassemble, and it is inconvenient to replace and repair it later. Utility Model Content
[0004] In order to remedy the above deficiencies, the utility model provides a sewing machine threading structure, which aims to improve the problem that when the threading device and the sewing needle are not aligned during operation, the threading device and the sewing needle may collide and be easily damaged, and the threading device is inconvenient to disassemble, and it is inconvenient to replace and repair later.
[0005] The utility model is implemented as follows: a sewing machine threading structure comprises a sewing machine body and a sewing needle arranged on the sewing machine body, the sewing needle is provided with a needle hole, a support frame is provided on one side of the bottom end of the sewing needle, a presser foot is installed at the bottom end of the support frame, a slider is slidably installed on the inner wall of the support frame, a lifting component is installed on the slider, the top end of the slider is clamped with a support block, one side of the support block is fixedly installed with a bracket, a support rod is slidably installed on the bracket, one end of the support rod slides through the support block and is fixedly installed with a buffer component, one end of the buffer component is fixedly installed with a threading head, and the threading head slides through the needle hole.
[0006] In a preferred technical solution of the utility model, grooves are symmetrically arranged on both sides of the threading head, and the grooves are arranged in an L shape.
[0007] In the preferred technical scheme of the present utility model, the lifting assembly includes a first guide rod and a threaded rod, the first guide rod and the threaded rod are respectively fixedly installed on the bottom end of the inner wall of the support frame, the slider is slidably installed on the first guide rod and threadedly installed on the threaded rod, the first rotating shaft is fixedly installed on the top of the threaded rod, a worm wheel is fixedly installed on the first rotating shaft, a worm is rotatably installed on one side of the inner wall of the support frame, the worm and the worm wheel are drivingly connected, one end of the worm is fixedly installed on the second rotating shaft, one end of the second rotating shaft passes through the support frame and fixedly installed on the turntable, the top end of the first guide rod and the top end of the first rotating shaft are respectively fixedly connected and rotatably connected to the top end of the inner wall of the support frame.
[0008] In the preferred technical solution of the present utility model, the first side panel is symmetrically fixedly installed between the two sides of the inner wall of the support frame, and the first side panel is provided with a first strip hole matching the slider, the slider is slidably connected to the inner wall of the first strip hole, and the support block is slidably installed between the two first side panels.
[0009] In the preferred technical solution of the present utility model, the bracket is L-shaped, the other end of the support rod passes through the bracket and is fixedly installed with a push plate, a support ring is fixedly installed on the outside of the support rod, a first spring is fixedly installed between one side of the support ring and the support block, and the first spring is movably sleeved on the outside of the support rod.
[0010] In the preferred technical solution of the present utility model, the buffer assembly includes a support bar and a quadrangular prism, the support bar is fixedly installed on one end of the support rod, a first slide groove is provided on one end of the support bar and the quadrangular prism is slidably mounted on the support bar, a second spring is fixedly installed between one end of the quadrangular prism and one side of the inner wall of the first slide groove, the threading head is fixedly installed on one end of the quadrangular prism, the quadrangular prism is slidably connected to the inner wall of the first slide groove, and the quadrangular prism slides through the needle hole.
[0011] In the preferred technical solution of the utility model, a limit block is symmetrically fixedly installed on the outer side of the quadrangular prism, and both ends of the limit block must also pass through the support bar. Second strip holes matching the limit block are provided on both sides of the support bar, and a second guide rod is fixedly installed on the inner wall of the second strip hole, and the limit block is slidably installed on the second guide rod.
[0012] In the preferred technical solution of the present utility model, an insert block is fixedly installed at the bottom end of the support block, a socket matching the insert block is provided on the sliding block, a through hole is provided in the insert block, a partition is fixedly installed on the inner wall of the through hole, a third spring is symmetrically fixedly installed on both sides of the partition, a stop block is fixedly installed at both ends of the third spring, the top of the stop block is slidably connected to the bottom end of the sliding block, the two stop blocks are symmetrically arranged and one side is inclined, and the stop block is slidably connected to the inner wall of the through hole.
[0013] In the preferred technical solution of the utility model, a push block is fixedly installed on one side of the resistance block, the bottom end of the push block passes through the plug block and extends to the outside, a third strip hole matching the push block is provided on the plug block, and both sides of one end of the push block are arranged as arcs.
[0014] The beneficial effects of the utility model are as follows: the utility model obtains a sewing machine threading structure through the above design. When threading is needed, according to the length of the sewing needle and the position of the needle hole, the rotating disk drives the first rotating shaft to rotate through the cooperation of the second rotating shaft, the worm gear and the worm, the rotation of the first rotating shaft drives the threaded rod to rotate, and the rotation of the threaded rod drives the slider to rise and fall to adjust the height of the threading head, so that the height of the threading head can be adjusted, which is convenient for threading sewing needles of different lengths; after the adjustment is completed, the push plate is pressed to drive the support rod to move, and the movement of the support rod squeezes the first spring while also The component drives the threading head through the needle hole. At this time, if the deviation and collision occur, the setting of the second spring can cause the quadrangular prism to contract for buffering, which plays a protective role for the threading head and sewing needle, thereby increasing the service life; after the lead to be threaded is put into the groove on the threading head, the push plate is loosened, and the elastic force of the first spring drives the support rod to move back to complete the threading. When the threading equipment needs to be replaced, the push block is pressed inward relatively. After the push block moves and drives the support block to move and contract into the through hole, the support block can be directly removed for replacement, which is convenient for quick installation and disassembly, and convenient for later replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a structural schematic diagram of a sewing machine threading structure provided by an embodiment of the utility model;
[0017] Figure 2 A structural schematic diagram of a support frame is provided for an implementation mode of the utility model;
[0018] Figure 3 A structural schematic diagram of a lifting assembly is provided for an embodiment of the utility model;
[0019] Figure 4 A partial structural schematic diagram of a sewing machine threading structure is provided for an embodiment of the utility model;
[0020] Figure 5 A schematic diagram of the structure of a buffer assembly is provided for an embodiment of the utility model;
[0021] Figure 6 A structural schematic diagram of an insert block is provided for an implementation mode of the utility model.
[0022] In the figure: 110-sewing machine body; 111-sewing needle; 112-needle hole; 120-support frame; 121-presser foot; 122-slider; 130-support block; 131-bracket; 132-support rod; 133-buffer assembly; 1331-support bar; 1332-quadrangular column; 1333-second spring; 1334-limiting block; 1335-second guide rod; 134-first spring; 140-threading head; 150-first guide rod; 151-threaded rod; 152-first rotating shaft; 153-turntable; 154-first side plate; 160-insertion block; 161-partition plate; 162-third spring; 163-resistance block; 164-push block. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1 and Figure 2 The utility model provides a technical solution: a sewing machine threading structure, including a sewing machine body 110 and a sewing needle 111 arranged on the sewing machine body 110, a needle hole 112 is arranged on the sewing needle 111, a support frame 120 is arranged on one side of the bottom end of the sewing needle 111, a presser foot 121 is installed at the bottom end of the support frame 120, a slider 122 is slidably installed on the inner wall of the support frame 120, a lifting component is installed on the slider 122, the top of the slider 122 is clamped with a support block 130, a bracket 131 is fixedly installed on one side of the support block 130, a support rod 132 is slidably installed on the bracket 131, one end of the support rod 132 slides through the support block 130 and is fixedly installed with a buffer component 133, a threading head 140 is fixedly installed on one end of the buffer component 133, and the threading head 140 slides through the needle hole 112.
[0025] In some specific implementation schemes, grooves are symmetrically arranged on both sides of the threading head 140, and the grooves are arranged in an L-shape to facilitate threading of multiple wires at the same time.
[0026] See also Figure 3The lifting assembly includes a first guide rod 150 and a threaded rod 151. The first guide rod 150 and the threaded rod 151 are fixedly installed on the bottom end of the inner wall of the support frame 120 respectively. The slider 122 is slidably installed on the first guide rod 150 and threadedly installed on the threaded rod 151. The first rotating shaft 152 is fixedly installed on the top of the threaded rod 151. A worm wheel is fixedly installed on the first rotating shaft 152. A worm is rotatably installed on one side of the inner wall of the support frame 120. The worm and the worm wheel are connected in driving. One end of the worm is fixedly installed on the second rotating shaft. One end of the second rotating shaft passes through the support frame 120 and is fixedly installed on a turntable 153. The top of the first guide rod 150 and the top of the first rotating shaft 152 are fixedly connected and rotatably connected to the top of the inner wall of the support frame 120 respectively.
[0027] In some specific embodiments, the first side plate 154 is symmetrically fixedly installed between the two sides of the inner wall of the support frame 120, and the first side plate 154 is provided with a first strip hole matching the slider 122. The slider 122 is slidingly connected to the inner wall of the first strip hole, and the support block 130 is slidingly installed between the two first side plates 154. The setting of the first side plate 154 improves the stability of the support block 130 when it moves.
[0028] See also Figure 4 and Figure 5 The bracket 131 is L-shaped, the other end of the support rod 132 passes through the bracket 131 and is fixedly installed with the push plate, a support ring is fixedly installed on the outside of the support rod 132, a first spring 134 is fixedly installed between one side of the support ring and the support block 130, the first spring 134 is movably sleeved on the outside of the support rod 132, the buffer assembly 133 includes a support bar 1331 and a quadrangular prism 1332, one end of the support rod 132 is fixedly installed with the support bar 1331, one end of the support bar 1331 is provided with a first slide groove and slidably sleeved with the quadrangular prism 1332, a second spring 1333 is fixedly installed between one end of the quadrangular prism 1332 and one side of the inner wall of the first slide groove, a threading head 140 is fixedly installed on one end of the quadrangular prism 1332, the quadrangular prism 1332 is slidably connected to the inner wall of the first slide groove, and the quadrangular prism 1332 slides through the pinhole 112.
[0029] In some specific implementation schemes, a limit block 1334 is symmetrically fixedly installed on the outer side of the quadrangular prism 1332, and both ends of the limit block 1334 must pass through the support bar 1331. Second strip holes matching the limit blocks 1334 are provided on both sides of the support bar 1331, and a second guide rod 1335 is fixedly installed on the inner wall of the second strip hole. The limit block 1334 is slidably installed on the second guide rod 1335. The cooperation between the second guide rod 1335 and the limit block 1334 improves the stability of the quadrangular prism 1332 during movement, and at the same time limits the quadrangular prism 1332 to prevent the quadrangular prism 1332 from being separated from the support bar 1331 and causing damage.
[0030] See also Figure 6The bottom end of the support block 130 is fixedly installed with an insert block 160, the slider 122 is provided with a socket matching the insert block 160, a through hole is provided in the insert block 160, a partition 161 is fixedly installed on the inner wall of the through hole, and the third spring 162 is symmetrically fixedly installed on both sides of the partition 161, and the two ends of the third spring 162 are fixedly installed with a stop block 163, the top of the stop block 163 is slidably connected to the bottom end of the slider 122, the two stop blocks 163 are symmetrically arranged and one side is inclined, and the stop block 163 is slidably connected to the inner wall of the through hole.
[0031] In some specific implementation schemes, a push block 164 is fixedly installed on one side of the stop block 163, and the bottom end of the push block 164 passes through the plug block 160 and extends to the outside. A third strip hole matching the push block 164 is provided on the plug block 160, and arcs are provided on both sides of one end of the push block 164, which is convenient for quick disassembly of the plug block 160, facilitates later replacement and maintenance, and thus improves practicality.
[0032] Working principle: When threading is required, according to the length of the sewing needle 111 and the position of the needle hole 112, the rotating disk 153 drives the first rotating shaft 152 to rotate through the cooperation of the second rotating shaft, the worm gear and the worm, the first rotating shaft 152 rotates to drive the threaded rod 151 to rotate, and the threaded rod 151 rotates to drive the slider 122 to rise and fall, thereby adjusting the height of the threading head 140. After the adjustment is completed, the push plate is pressed to drive the support rod 132 to move, and the support rod 132 moves to squeeze the first spring 134 while also driving the buffer assembly 133 The threading head 140 passes through the needle hole 112. At this time, if it is offset and collides, the setting of the second spring 1333 can cause the quadrangular prism 1332 to shrink for buffering. After the lead to be threaded is put into the groove on the threading head 140, the push plate is loosened, and the elastic force of the first spring 134 drives the support rod 132 to move back to complete the threading. When the threading equipment needs to be replaced, the push block 164 is pressed inwardly. After the push block 164 moves and drives the resistance block 163 to move and shrink into the through hole, the support block 130 can be directly removed for replacement.
[0033] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A sewing machine threading structure, comprising a sewing machine body and a sewing needle arranged on the sewing machine body, wherein the sewing needle is provided with a needle hole, characterized in that: A support frame is provided on one side of the bottom end of the sewing needle, a presser foot is installed on the bottom end of the support frame, a slider is slidably installed on the inner wall of the support frame, a lifting assembly is installed on the slider, the top of the slider is clamped with a support block, a bracket is fixedly installed on one side of the support block, a support rod is slidably installed on the bracket, one end of the support rod slides through the support block and a buffer assembly is fixedly installed, a threading head is fixedly installed on one end of the buffer assembly, and the threading head slides through the needle hole.
2. A sewing machine threading structure according to claim 1, characterized in that: Grooves are symmetrically arranged on both sides of the threading head, and the grooves are arranged in an L shape.
3. A sewing machine threading structure according to claim 1, characterized in that: The lifting assembly includes a first guide rod and a threaded rod, the first guide rod and the threaded rod are respectively fixedly mounted on the bottom end of the inner wall of the support frame, the slider is slidably mounted on the first guide rod and threadedly mounted on the threaded rod, a first rotating shaft is fixedly mounted on the top end of the threaded rod, a worm wheel is fixedly mounted on the first rotating shaft, a worm is rotatably mounted on one side of the inner wall of the support frame, the worm and the worm wheel are drivingly connected, one end of the worm is fixedly mounted on the second rotating shaft, one end of the second rotating shaft passes through the support frame and is fixedly mounted on the turntable.
4. A sewing machine threading structure according to claim 1, characterized in that: A first side plate is symmetrically fixedly installed between two sides of the inner wall of the support frame, and a first strip hole matching the sliding block is arranged on the first side plate, and the sliding block is slidably connected to the inner wall of the first strip hole.
5. A sewing machine threading structure according to claim 1, characterized in that: The bracket is L-shaped, the other end of the support rod passes through the bracket and is fixedly installed with a push plate, a support ring is fixedly installed on the outer side of the support rod, and a first spring is fixedly installed between one side of the support ring and the support block.
6. A sewing machine threading structure according to claim 1, characterized in that: The buffer assembly includes a support bar and a quadrangular prism, the support bar is fixedly installed at one end of the support rod, a first slide groove is provided at one end of the support bar and slidably sleeved on the quadrangular prism, a second spring is fixedly installed between one end of the quadrangular prism and one side of the inner wall of the first slide groove, and the threading head is fixedly installed at one end of the quadrangular prism.
7. A sewing machine threading structure according to claim 6, characterized in that: A limit block is symmetrically fixedly installed on the outer side of the quadrangular prism, and both ends of the limit block must also pass through the support bar. Second strip holes matching the limit block are provided on both sides of the support bar, and a second guide rod is fixedly installed on the inner wall of the second strip hole, and the limit block is slidably installed on the second guide rod.
8. A sewing machine threading structure according to claim 1, characterized in that: The bottom end of the support block is fixedly installed with an insert block, the slider is provided with a socket matching the insert block, the insert block is provided with a through hole, a partition is fixedly installed on the inner wall of the through hole, a third spring is symmetrically fixedly installed on both sides of the partition, and a stop block is fixedly installed at both ends of the third spring, and the top of the stop block is slidably connected to the bottom end of the slider.
9. A sewing machine threading structure according to claim 8, characterized in that: A push block is fixedly mounted on one side of the stop block, a bottom end of the push block penetrates the insert block and extends to the outside, and a third strip hole matching the push block is provided on the insert block.